773641008: Onychocytic matricoma (disorder)

SNOMED CT Concept\Clinical finding (finding)\...

\Skin AND/OR mucosa finding (finding)\Skin or mucosa lesion\Lesion of skin and/or skin-associated mucous membrane\Skin lesion\Neoplasm of skin\Neoplasm of skin region (disorder)\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Skin AND/OR mucosa finding (finding)\Skin or mucosa lesion\Lesion of skin and/or skin-associated mucous membrane\Skin lesion\Neoplasm of skin\Epithelial neoplasm of skin (disorder)\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Skin AND/OR mucosa finding (finding)\Skin or mucosa lesion\Lesion of skin and/or skin-associated mucous membrane\Skin lesion\Neoplasm of skin\Benign neoplasm of skin\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Skin AND/OR mucosa finding (finding)\Skin or mucosa lesion\Lesion of skin and/or skin-associated mucous membrane\Skin lesion\Neoplasm of skin\Benign neoplasm of skin\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Skin AND/OR mucosa finding (finding)\Skin finding\Mass of skin\Neoplasm of skin\Neoplasm of skin region (disorder)\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Skin AND/OR mucosa finding (finding)\Skin finding\Mass of skin\Neoplasm of skin\Epithelial neoplasm of skin (disorder)\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Skin AND/OR mucosa finding (finding)\Skin finding\Mass of skin\Neoplasm of skin\Benign neoplasm of skin\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Skin AND/OR mucosa finding (finding)\Skin finding\Mass of skin\Neoplasm of skin\Benign neoplasm of skin\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Skin AND/OR mucosa finding (finding)\Skin finding\Nail finding\Disorder of nail (disorder)\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Skin AND/OR mucosa finding (finding)\Skin finding\Disorder of skin (disorder)\Disorder of skin appendage\Disorder of nail (disorder)\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Skin AND/OR mucosa finding (finding)\Skin finding\Disorder of skin (disorder)\Skin lesion\Neoplasm of skin\Neoplasm of skin region (disorder)\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Skin AND/OR mucosa finding (finding)\Skin finding\Disorder of skin (disorder)\Skin lesion\Neoplasm of skin\Epithelial neoplasm of skin (disorder)\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Skin AND/OR mucosa finding (finding)\Skin finding\Disorder of skin (disorder)\Skin lesion\Neoplasm of skin\Benign neoplasm of skin\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Skin AND/OR mucosa finding (finding)\Skin finding\Disorder of skin (disorder)\Skin lesion\Neoplasm of skin\Benign neoplasm of skin\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.

\Finding of limb structure\Lump on extremities\Neoplasm of extremity (disorder)\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Finding of limb structure\Nail finding\Disorder of nail (disorder)\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Finding of limb structure\Disorder of limb (disorder)\Neoplasm of extremity (disorder)\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Finding of limb structure\Disorder of limb (disorder)\Disorder of soft tissue of limb\Disorder of nail (disorder)\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Finding of limb structure\Disorder of limb (disorder)\Disorder of digit\Disorder of nail (disorder)\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.

\Mass of body structure\Mass of soft tissue (finding)\Neoplasm of soft tissue (disorder)\Neoplasm of skin\Neoplasm of skin region (disorder)\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Mass of body structure\Mass of soft tissue (finding)\Neoplasm of soft tissue (disorder)\Neoplasm of skin\Epithelial neoplasm of skin (disorder)\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Mass of body structure\Mass of soft tissue (finding)\Neoplasm of soft tissue (disorder)\Neoplasm of skin\Benign neoplasm of skin\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Mass of body structure\Mass of soft tissue (finding)\Neoplasm of soft tissue (disorder)\Neoplasm of skin\Benign neoplasm of skin\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Mass of body structure\Mass of soft tissue (finding)\Neoplasm of soft tissue (disorder)\Benign neoplasm of soft tissue (disorder)\Benign neoplasm of skin\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Mass of body structure\Mass of soft tissue (finding)\Neoplasm of soft tissue (disorder)\Benign neoplasm of soft tissue (disorder)\Benign neoplasm of skin\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Mass of body structure\Mass of soft tissue (finding)\Mass of skin\Neoplasm of skin\Neoplasm of skin region (disorder)\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Mass of body structure\Mass of soft tissue (finding)\Mass of skin\Neoplasm of skin\Epithelial neoplasm of skin (disorder)\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Mass of body structure\Mass of soft tissue (finding)\Mass of skin\Neoplasm of skin\Benign neoplasm of skin\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Mass of body structure\Mass of soft tissue (finding)\Mass of skin\Neoplasm of skin\Benign neoplasm of skin\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Mass of body structure\Neoplasm of integumentary system (disorder)\Neoplasm of skin\Neoplasm of skin region (disorder)\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Mass of body structure\Neoplasm of integumentary system (disorder)\Neoplasm of skin\Epithelial neoplasm of skin (disorder)\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Mass of body structure\Neoplasm of integumentary system (disorder)\Neoplasm of skin\Benign neoplasm of skin\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Mass of body structure\Neoplasm of integumentary system (disorder)\Neoplasm of skin\Benign neoplasm of skin\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Mass of body structure\Mass of body region\Mass of skin\Neoplasm of skin\Neoplasm of skin region (disorder)\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Mass of body structure\Mass of body region\Mass of skin\Neoplasm of skin\Epithelial neoplasm of skin (disorder)\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Mass of body structure\Mass of body region\Mass of skin\Neoplasm of skin\Benign neoplasm of skin\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Mass of body structure\Mass of body region\Mass of skin\Neoplasm of skin\Benign neoplasm of skin\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Mass of body structure\Mass of body region\Lump on extremities\Neoplasm of extremity (disorder)\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.

\General finding of soft tissue\Mass of soft tissue (finding)\Neoplasm of soft tissue (disorder)\Neoplasm of skin\Neoplasm of skin region (disorder)\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\General finding of soft tissue\Mass of soft tissue (finding)\Neoplasm of soft tissue (disorder)\Neoplasm of skin\Epithelial neoplasm of skin (disorder)\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\General finding of soft tissue\Mass of soft tissue (finding)\Neoplasm of soft tissue (disorder)\Neoplasm of skin\Benign neoplasm of skin\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\General finding of soft tissue\Mass of soft tissue (finding)\Neoplasm of soft tissue (disorder)\Neoplasm of skin\Benign neoplasm of skin\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\General finding of soft tissue\Mass of soft tissue (finding)\Neoplasm of soft tissue (disorder)\Benign neoplasm of soft tissue (disorder)\Benign neoplasm of skin\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\General finding of soft tissue\Mass of soft tissue (finding)\Neoplasm of soft tissue (disorder)\Benign neoplasm of soft tissue (disorder)\Benign neoplasm of skin\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\General finding of soft tissue\Mass of soft tissue (finding)\Mass of skin\Neoplasm of skin\Neoplasm of skin region (disorder)\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\General finding of soft tissue\Mass of soft tissue (finding)\Mass of skin\Neoplasm of skin\Epithelial neoplasm of skin (disorder)\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\General finding of soft tissue\Mass of soft tissue (finding)\Mass of skin\Neoplasm of skin\Benign neoplasm of skin\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\General finding of soft tissue\Mass of soft tissue (finding)\Mass of skin\Neoplasm of skin\Benign neoplasm of skin\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\General finding of soft tissue\Skin finding\Mass of skin\Neoplasm of skin\Neoplasm of skin region (disorder)\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\General finding of soft tissue\Skin finding\Mass of skin\Neoplasm of skin\Epithelial neoplasm of skin (disorder)\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\General finding of soft tissue\Skin finding\Mass of skin\Neoplasm of skin\Benign neoplasm of skin\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\General finding of soft tissue\Skin finding\Mass of skin\Neoplasm of skin\Benign neoplasm of skin\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\General finding of soft tissue\Skin finding\Nail finding\Disorder of nail (disorder)\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\General finding of soft tissue\Skin finding\Disorder of skin (disorder)\Disorder of skin appendage\Disorder of nail (disorder)\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\General finding of soft tissue\Skin finding\Disorder of skin (disorder)\Skin lesion\Neoplasm of skin\Neoplasm of skin region (disorder)\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\General finding of soft tissue\Skin finding\Disorder of skin (disorder)\Skin lesion\Neoplasm of skin\Epithelial neoplasm of skin (disorder)\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\General finding of soft tissue\Skin finding\Disorder of skin (disorder)\Skin lesion\Neoplasm of skin\Benign neoplasm of skin\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\General finding of soft tissue\Skin finding\Disorder of skin (disorder)\Skin lesion\Neoplasm of skin\Benign neoplasm of skin\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\General finding of soft tissue\Disorder of soft tissue\Disorder of soft tissue of limb\Disorder of nail (disorder)\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\General finding of soft tissue\Disorder of soft tissue\Lesion of soft tissue (disorder)\Neoplasm of soft tissue (disorder)\Neoplasm of skin\Neoplasm of skin region (disorder)\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\General finding of soft tissue\Disorder of soft tissue\Lesion of soft tissue (disorder)\Neoplasm of soft tissue (disorder)\Neoplasm of skin\Epithelial neoplasm of skin (disorder)\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\General finding of soft tissue\Disorder of soft tissue\Lesion of soft tissue (disorder)\Neoplasm of soft tissue (disorder)\Neoplasm of skin\Benign neoplasm of skin\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\General finding of soft tissue\Disorder of soft tissue\Lesion of soft tissue (disorder)\Neoplasm of soft tissue (disorder)\Neoplasm of skin\Benign neoplasm of skin\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\General finding of soft tissue\Disorder of soft tissue\Lesion of soft tissue (disorder)\Neoplasm of soft tissue (disorder)\Benign neoplasm of soft tissue (disorder)\Benign neoplasm of skin\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\General finding of soft tissue\Disorder of soft tissue\Lesion of soft tissue (disorder)\Neoplasm of soft tissue (disorder)\Benign neoplasm of soft tissue (disorder)\Benign neoplasm of skin\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\General finding of soft tissue\Disorder of soft tissue\Lesion of soft tissue (disorder)\Skin lesion\Neoplasm of skin\Neoplasm of skin region (disorder)\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\General finding of soft tissue\Disorder of soft tissue\Lesion of soft tissue (disorder)\Skin lesion\Neoplasm of skin\Epithelial neoplasm of skin (disorder)\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\General finding of soft tissue\Disorder of soft tissue\Lesion of soft tissue (disorder)\Skin lesion\Neoplasm of skin\Benign neoplasm of skin\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\General finding of soft tissue\Disorder of soft tissue\Lesion of soft tissue (disorder)\Skin lesion\Neoplasm of skin\Benign neoplasm of skin\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\General finding of soft tissue\Disorder of soft tissue\Disorder of skin and/or subcutaneous tissue (disorder)\Disorder of skin (disorder)\Disorder of skin appendage\Disorder of nail (disorder)\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\General finding of soft tissue\Disorder of soft tissue\Disorder of skin and/or subcutaneous tissue (disorder)\Disorder of skin (disorder)\Skin lesion\Neoplasm of skin\Neoplasm of skin region (disorder)\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\General finding of soft tissue\Disorder of soft tissue\Disorder of skin and/or subcutaneous tissue (disorder)\Disorder of skin (disorder)\Skin lesion\Neoplasm of skin\Epithelial neoplasm of skin (disorder)\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\General finding of soft tissue\Disorder of soft tissue\Disorder of skin and/or subcutaneous tissue (disorder)\Disorder of skin (disorder)\Skin lesion\Neoplasm of skin\Benign neoplasm of skin\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\General finding of soft tissue\Disorder of soft tissue\Disorder of skin and/or subcutaneous tissue (disorder)\Disorder of skin (disorder)\Skin lesion\Neoplasm of skin\Benign neoplasm of skin\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.

\Integumentary system finding\Disorder of integument\Neoplasm of integumentary system (disorder)\Neoplasm of skin\Neoplasm of skin region (disorder)\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Integumentary system finding\Disorder of integument\Neoplasm of integumentary system (disorder)\Neoplasm of skin\Epithelial neoplasm of skin (disorder)\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Integumentary system finding\Disorder of integument\Neoplasm of integumentary system (disorder)\Neoplasm of skin\Benign neoplasm of skin\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Integumentary system finding\Disorder of integument\Neoplasm of integumentary system (disorder)\Neoplasm of skin\Benign neoplasm of skin\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Integumentary system finding\Disorder of integument\Disorder of skin and/or subcutaneous tissue (disorder)\Disorder of skin (disorder)\Disorder of skin appendage\Disorder of nail (disorder)\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Integumentary system finding\Disorder of integument\Disorder of skin and/or subcutaneous tissue (disorder)\Disorder of skin (disorder)\Skin lesion\Neoplasm of skin\Neoplasm of skin region (disorder)\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Integumentary system finding\Disorder of integument\Disorder of skin and/or subcutaneous tissue (disorder)\Disorder of skin (disorder)\Skin lesion\Neoplasm of skin\Epithelial neoplasm of skin (disorder)\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Integumentary system finding\Disorder of integument\Disorder of skin and/or subcutaneous tissue (disorder)\Disorder of skin (disorder)\Skin lesion\Neoplasm of skin\Benign neoplasm of skin\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Integumentary system finding\Disorder of integument\Disorder of skin and/or subcutaneous tissue (disorder)\Disorder of skin (disorder)\Skin lesion\Neoplasm of skin\Benign neoplasm of skin\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Integumentary system finding\Skin finding\Mass of skin\Neoplasm of skin\Neoplasm of skin region (disorder)\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Integumentary system finding\Skin finding\Mass of skin\Neoplasm of skin\Epithelial neoplasm of skin (disorder)\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Integumentary system finding\Skin finding\Mass of skin\Neoplasm of skin\Benign neoplasm of skin\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Integumentary system finding\Skin finding\Mass of skin\Neoplasm of skin\Benign neoplasm of skin\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Integumentary system finding\Skin finding\Nail finding\Disorder of nail (disorder)\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Integumentary system finding\Skin finding\Disorder of skin (disorder)\Disorder of skin appendage\Disorder of nail (disorder)\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Integumentary system finding\Skin finding\Disorder of skin (disorder)\Skin lesion\Neoplasm of skin\Neoplasm of skin region (disorder)\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Integumentary system finding\Skin finding\Disorder of skin (disorder)\Skin lesion\Neoplasm of skin\Epithelial neoplasm of skin (disorder)\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Integumentary system finding\Skin finding\Disorder of skin (disorder)\Skin lesion\Neoplasm of skin\Benign neoplasm of skin\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Integumentary system finding\Skin finding\Disorder of skin (disorder)\Skin lesion\Neoplasm of skin\Benign neoplasm of skin\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.

\Disease\Neoplasm and/or hamartoma (disorder)\Neoplastic disease\Neoplasm of integumentary system (disorder)\Neoplasm of skin\Neoplasm of skin region (disorder)\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Disease\Neoplasm and/or hamartoma (disorder)\Neoplastic disease\Neoplasm of integumentary system (disorder)\Neoplasm of skin\Epithelial neoplasm of skin (disorder)\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Disease\Neoplasm and/or hamartoma (disorder)\Neoplastic disease\Neoplasm of integumentary system (disorder)\Neoplasm of skin\Benign neoplasm of skin\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Disease\Neoplasm and/or hamartoma (disorder)\Neoplastic disease\Neoplasm of integumentary system (disorder)\Neoplasm of skin\Benign neoplasm of skin\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Disease\Neoplasm and/or hamartoma (disorder)\Neoplastic disease\Neoplasm of soft tissue (disorder)\Neoplasm of skin\Neoplasm of skin region (disorder)\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Disease\Neoplasm and/or hamartoma (disorder)\Neoplastic disease\Neoplasm of soft tissue (disorder)\Neoplasm of skin\Epithelial neoplasm of skin (disorder)\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Disease\Neoplasm and/or hamartoma (disorder)\Neoplastic disease\Neoplasm of soft tissue (disorder)\Neoplasm of skin\Benign neoplasm of skin\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Disease\Neoplasm and/or hamartoma (disorder)\Neoplastic disease\Neoplasm of soft tissue (disorder)\Neoplasm of skin\Benign neoplasm of skin\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Disease\Neoplasm and/or hamartoma (disorder)\Neoplastic disease\Neoplasm of soft tissue (disorder)\Benign neoplasm of soft tissue (disorder)\Benign neoplasm of skin\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Disease\Neoplasm and/or hamartoma (disorder)\Neoplastic disease\Neoplasm of soft tissue (disorder)\Benign neoplasm of soft tissue (disorder)\Benign neoplasm of skin\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Disease\Neoplasm and/or hamartoma (disorder)\Neoplastic disease\Neoplasm of extremity (disorder)\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Disease\Neoplasm and/or hamartoma (disorder)\Neoplastic disease\Benign neoplastic disease (disorder)\Benign neoplasm of soft tissue (disorder)\Benign neoplasm of skin\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Disease\Neoplasm and/or hamartoma (disorder)\Neoplastic disease\Benign neoplastic disease (disorder)\Benign neoplasm of soft tissue (disorder)\Benign neoplasm of skin\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Disease\Disorder of body system\Skin or mucosa lesion\Lesion of skin and/or skin-associated mucous membrane\Skin lesion\Neoplasm of skin\Neoplasm of skin region (disorder)\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Disease\Disorder of body system\Skin or mucosa lesion\Lesion of skin and/or skin-associated mucous membrane\Skin lesion\Neoplasm of skin\Epithelial neoplasm of skin (disorder)\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Disease\Disorder of body system\Skin or mucosa lesion\Lesion of skin and/or skin-associated mucous membrane\Skin lesion\Neoplasm of skin\Benign neoplasm of skin\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Disease\Disorder of body system\Skin or mucosa lesion\Lesion of skin and/or skin-associated mucous membrane\Skin lesion\Neoplasm of skin\Benign neoplasm of skin\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Disease\Disorder of body system\Disorder of integument\Neoplasm of integumentary system (disorder)\Neoplasm of skin\Neoplasm of skin region (disorder)\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Disease\Disorder of body system\Disorder of integument\Neoplasm of integumentary system (disorder)\Neoplasm of skin\Epithelial neoplasm of skin (disorder)\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Disease\Disorder of body system\Disorder of integument\Neoplasm of integumentary system (disorder)\Neoplasm of skin\Benign neoplasm of skin\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Disease\Disorder of body system\Disorder of integument\Neoplasm of integumentary system (disorder)\Neoplasm of skin\Benign neoplasm of skin\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Disease\Disorder of body system\Disorder of integument\Disorder of skin and/or subcutaneous tissue (disorder)\Disorder of skin (disorder)\Disorder of skin appendage\Disorder of nail (disorder)\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Disease\Disorder of body system\Disorder of integument\Disorder of skin and/or subcutaneous tissue (disorder)\Disorder of skin (disorder)\Skin lesion\Neoplasm of skin\Neoplasm of skin region (disorder)\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Disease\Disorder of body system\Disorder of integument\Disorder of skin and/or subcutaneous tissue (disorder)\Disorder of skin (disorder)\Skin lesion\Neoplasm of skin\Epithelial neoplasm of skin (disorder)\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Disease\Disorder of body system\Disorder of integument\Disorder of skin and/or subcutaneous tissue (disorder)\Disorder of skin (disorder)\Skin lesion\Neoplasm of skin\Benign neoplasm of skin\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Disease\Disorder of body system\Disorder of integument\Disorder of skin and/or subcutaneous tissue (disorder)\Disorder of skin (disorder)\Skin lesion\Neoplasm of skin\Benign neoplasm of skin\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Disease\Disorder of limb (disorder)\Neoplasm of extremity (disorder)\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Disease\Disorder of limb (disorder)\Disorder of soft tissue of limb\Disorder of nail (disorder)\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Disease\Disorder of limb (disorder)\Disorder of digit\Disorder of nail (disorder)\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Disease\Disorder of soft tissue\Disorder of soft tissue of limb\Disorder of nail (disorder)\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Disease\Disorder of soft tissue\Lesion of soft tissue (disorder)\Neoplasm of soft tissue (disorder)\Neoplasm of skin\Neoplasm of skin region (disorder)\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Disease\Disorder of soft tissue\Lesion of soft tissue (disorder)\Neoplasm of soft tissue (disorder)\Neoplasm of skin\Epithelial neoplasm of skin (disorder)\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Disease\Disorder of soft tissue\Lesion of soft tissue (disorder)\Neoplasm of soft tissue (disorder)\Neoplasm of skin\Benign neoplasm of skin\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Disease\Disorder of soft tissue\Lesion of soft tissue (disorder)\Neoplasm of soft tissue (disorder)\Neoplasm of skin\Benign neoplasm of skin\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Disease\Disorder of soft tissue\Lesion of soft tissue (disorder)\Neoplasm of soft tissue (disorder)\Benign neoplasm of soft tissue (disorder)\Benign neoplasm of skin\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Disease\Disorder of soft tissue\Lesion of soft tissue (disorder)\Neoplasm of soft tissue (disorder)\Benign neoplasm of soft tissue (disorder)\Benign neoplasm of skin\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Disease\Disorder of soft tissue\Lesion of soft tissue (disorder)\Skin lesion\Neoplasm of skin\Neoplasm of skin region (disorder)\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Disease\Disorder of soft tissue\Lesion of soft tissue (disorder)\Skin lesion\Neoplasm of skin\Epithelial neoplasm of skin (disorder)\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Disease\Disorder of soft tissue\Lesion of soft tissue (disorder)\Skin lesion\Neoplasm of skin\Benign neoplasm of skin\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Disease\Disorder of soft tissue\Lesion of soft tissue (disorder)\Skin lesion\Neoplasm of skin\Benign neoplasm of skin\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Disease\Disorder of soft tissue\Disorder of skin and/or subcutaneous tissue (disorder)\Disorder of skin (disorder)\Disorder of skin appendage\Disorder of nail (disorder)\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Disease\Disorder of soft tissue\Disorder of skin and/or subcutaneous tissue (disorder)\Disorder of skin (disorder)\Skin lesion\Neoplasm of skin\Neoplasm of skin region (disorder)\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Disease\Disorder of soft tissue\Disorder of skin and/or subcutaneous tissue (disorder)\Disorder of skin (disorder)\Skin lesion\Neoplasm of skin\Epithelial neoplasm of skin (disorder)\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Disease\Disorder of soft tissue\Disorder of skin and/or subcutaneous tissue (disorder)\Disorder of skin (disorder)\Skin lesion\Neoplasm of skin\Benign neoplasm of skin\Benign neoplasm of nail apparatus (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.
\Disease\Disorder of soft tissue\Disorder of skin and/or subcutaneous tissue (disorder)\Disorder of skin (disorder)\Skin lesion\Neoplasm of skin\Benign neoplasm of skin\Benign epithelial neoplasm of skin (disorder)\A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.

Status: current, Not sufficiently defined by necessary conditions definition status (core metadata concept). Date: 31-Jan 2019. Module: SNOMED CT core

Descriptions:

Id Description Lang Type Status Case? Module

5405340014 A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells. en Definition Active Entire term case sensitive (core metadata concept) SNOMED CT core

5405341013 A rare, benign, nail tumour originating in the nail matrix characterised by localised pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumour with endokeratinisation in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells. en Definition Active Entire term case sensitive (core metadata concept) SNOMED CT core

3725335018 Onychocytic matricoma (disorder) en Fully specified name Active Entire term case insensitive (core metadata concept) SNOMED CT core

3725336017 Acanthoma of nail matrix en Synonym (core metadata concept) Active Entire term case insensitive (core metadata concept) SNOMED CT core

3725337014 Onychocytic matricoma en Synonym (core metadata concept) Active Entire term case insensitive (core metadata concept) SNOMED CT core

907741000172119 acanthome de la matrice des ongles fr Synonym (core metadata concept) Active Entire term case insensitive (core metadata concept) SNOMED CT Switzerland NRC maintained Module

941411000172114 matricome onychocytique fr Synonym (core metadata concept) Active Entire term case insensitive (core metadata concept) SNOMED CT Switzerland NRC maintained Module

3413201001000112 Onychozytisches Matrikom de Synonym (core metadata concept) Active Entire term case sensitive (core metadata concept) SNOMED CT Switzerland NRC maintained Module

Expanded Value Set

Outbound Relationships	Type	Target	Active	Characteristic	Refinability	Group	Values
A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.	Finding site	Structure of nail matrix (body structure)	true	Inferred relationship	Some	1
A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.	Is a	Neoplasm of extremity (disorder)	false	Inferred relationship	Some
A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.	Is a	Benign neoplastic disease (disorder)	false	Inferred relationship	Some
A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.	Is a	Disorder of digit	false	Inferred relationship	Some
A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.	Associated morphology	Benign epithelial neoplasm - category	false	Inferred relationship	Some	1
A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.	Is a	Nail finding	false	Inferred relationship	Some
A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.	Is a	Neoplasm of integumentary system (disorder)	false	Inferred relationship	Some
A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.	Is a	Benign neoplasm of nail apparatus (disorder)	true	Inferred relationship	Some
A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.	Associated morphology	Benign epithelial neoplasm	true	Inferred relationship	Some	1
A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.	Is a	Benign epithelial neoplasm of skin (disorder)	true	Inferred relationship	Some

Inbound Relationships

Type

Active

Source

Characteristic

Refinability

Group

Reference Sets

Component annotation with string value reference set (foundation metadata concept)

Back to Start

Id	Description	Lang	Type	Status	Case?	Module
5405340014	A rare, benign, nail tumor originating in the nail matrix characterized by localized pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumor with endokeratinization in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.	en	Definition	Active	Entire term case sensitive (core metadata concept)	SNOMED CT core
5405341013	A rare, benign, nail tumour originating in the nail matrix characterised by localised pachyonychia and variable degrees of pigmentation: pigmented, melanocytic (common, longitudinal melanonychia that may simulate a foreign body) or hypopigmented. Histopathology demonstrates a purely epithelial tumour with endokeratinisation in the deep portion and concentrically arranged nests of prekeratogenous and keratogenous cells.	en	Definition	Active	Entire term case sensitive (core metadata concept)	SNOMED CT core
3725335018	Onychocytic matricoma (disorder)	en	Fully specified name	Active	Entire term case insensitive (core metadata concept)	SNOMED CT core
3725336017	Acanthoma of nail matrix	en	Synonym (core metadata concept)	Active	Entire term case insensitive (core metadata concept)	SNOMED CT core
3725337014	Onychocytic matricoma	en	Synonym (core metadata concept)	Active	Entire term case insensitive (core metadata concept)	SNOMED CT core
907741000172119	acanthome de la matrice des ongles	fr	Synonym (core metadata concept)	Active	Entire term case insensitive (core metadata concept)	SNOMED CT Switzerland NRC maintained Module
941411000172114	matricome onychocytique	fr	Synonym (core metadata concept)	Active	Entire term case insensitive (core metadata concept)	SNOMED CT Switzerland NRC maintained Module
3413201001000112	Onychozytisches Matrikom	de	Synonym (core metadata concept)	Active	Entire term case sensitive (core metadata concept)	SNOMED CT Switzerland NRC maintained Module