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| A rare, genetic renal disease characterized by slowly progressive, chronic, tubulointerstitial nephritis, leading to end-stage renal disease before the age of 50 years, manifesting with mild proteinuria, glucosuria and, occasionally, urinary sediment abnormalities (mainly hematuria). Mild extrarenal manifestations, such as recurrent upper respiratory tract infections and abnormal liver function tests, may be associated. Renal biopsy reveals severe, chronic, interstitial fibrosis and tubular changes, as well as hallmark karyomegalic tubular epithelial cells which line the proximal and distal tubules and have enlarged, hyperchromatic nuclei. |
en |
Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare multiple congenital anomalies syndrome characterized by facial dysmorphism (hypertelorism, broad and high nasal bridge, depressed nasal ridge, short columella, underdeveloped maxilla, and prominent cupid-bow upper lip vermillion), mild to severe congenital sensorineural hearing loss, and skeletal abnormalities consisting of brachytelephalangy and broad thumbs and halluces with large, rounded epiphyses. Additional manifestations that have been reported include pulmonary valve stenosis, voice hoarseness and renal agenesis. |
en |
Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare multiple congenital anomalies syndrome with characteristics of several of the typical clinical features of Bohring Opitz syndrome such as intrauterine growth retardation, facial dysmorphism, microcephaly, severe feeding difficulties, joint contractures, intellectual disability and a Bohring Opitz syndrome posture of upper limbs. Trigonocephaly, synophrys, high myopia and cyclic emesis are very rarely described. |
en |
Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare genetic, multiple congenital anomalies syndrome with characteristics of the overlap of several typical clinical features of Bohring-Opitz syndrome and of Crisponi Syndrome/cold-induced sweating syndrome. |
en |
Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| Kelch like family member 7-related Crisponi/cold-induced sweating-like syndrome (disorder) |
en |
Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| KLHL9-related early-onset distal myopathy is a rare, genetic distal myopathy characterized by slowly progressive distal limb muscle weakness and atrophy (beginning with anterior tibial muscle involvement followed by the intrinsic hand muscles) in association with reduced sensation in a stocking-glove distribution. Patients present with high stepping gait, ankle areflexia and contractures in the first to second decade of life, associated with marked ankle extensor muscle atrophy; later proximal muscle involvement is moderate and ambulation is preserved throughout the life. |
en |
Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare, genetic, primary lipodystrophy syndrome characterized by severe developmental delay and intellectual disability, hypertonia, hyperreflexia, microcephaly, tightly adherent skin, an aged appearance, severe generalized lipodystrophy, and distinct facial dysmorphism which includes large prominent eyes, narrow nasal bridge, tented upper lip vermilion, an open mouth, and high-arched palate. Laboratory analysis of serum and urine are normal. |
en |
Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare, genetic, isolated diffuse palmoplantar keratoderma characterized by diffuse, mild to thick, finely demarcated hyperkeratosis of palms and soles. Additional clinical findings include knuckle pad-like keratoses on fingers, hyperkeratosis of umbilicus and areolae, diffuse dry skin, hyperhidrosis, hangnails and frequent fungal infections. Histological examination of lesions reveals orthokeratotic hyperkeratosis, acanthosis, hypergranulosis, and mild lymphocyte infiltrations in the upper dermis with no evidence of epidermolysis. |
en |
Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare, inherited, epidermolysis bullosa simplex characterized by neonatal onset of generalized or, less frequently, localized acral blistering. Milia are rare but atrophic scarring and dystrophic nails usually occur, along with focal keratoderma (palms and soles). Severe generalized blistering may cause perinatal death or persist during the entire life. Extracutaneous involvement is common, including anemia, growth retardation, oral cavity abnormalities (blisters and erosions, and caries) and constipation. |
en |
Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare ophthalmic disorder characterized by periodic inflammatory attacks of the cornea manifesting as unilateral ocular pain, conjunctival hyperemia, photophobia and epiphora lasting for 1 to 3 days, followed by blurred vision for several weeks. Caused by a heterozygous pathogenic variant c.61G>C, p.(Asp21His) in the NLRP3 gene. The pathogenic variant is highly penetrant (95%). The disease is autosomal dominant. |
en |
Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare congenital ectodermal disorder characterised by vascularising keratitis, hyperkeratotic skin lesions and hearing loss. |
en |
Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare diffuse, mutilating, hereditary palmoplantar keratoderma characterized by severe, honeycomb-pattern palmoplantar keratosis and pseudoainhum of the digits leading to autoamputation, associated with mild to moderate congenital sensorineural hearing loss. Additional features include stellate keratosis on the extensor surfaces of the fingers, feet, elbows and knees. Alopecia, onychogryphosis, nail dystrophy or clubbing, spastic paraplegia and myopathy may also be associated. |
en |
Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare, genetic, developmental defect during embryogenesis syndrome characterized by generalized keratosis follicularis, severe proportionate dwarfism and cerebral atrophy. Alopecia (of scalp, eyebrows and eyelashes) and microcephaly are additionally observed features. Intellectual disability, inguinal hernia and epilepsy may also be associated. There have been no further descriptions in the literature since 1974. |
en |
Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| Keratosis linearis-ichthyosis congenita-sclerosing keratoderma syndrome is an inherited epidermal disorder characterized by palmoplantar keratoderma, linear hyperkeratotic papules on the flexural side of large joints (cord-like distribution around wrists, in antecubital and popliteal folds), hyperkeratotic plaques (on neck, axillae, elbows, wrists, and knees), mild ichthyosiform scaling, and sclerotic constrictions around fingers that present flexural deformities. |
en |
Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare arrhythmogenic right ventricular cardiomyopathy (ARVC) and a cutaneous phenotype, characterized by peculiar wooly hair and palmoplantar keratoderma. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare neurologic disease characterized by the chronic consequences of bilirubin toxicity in the globus pallidus, sub-thalamic nuclei, and other brain regions, after exposure to high levels of unconjugated bilirubin in the neonatal period. Symptoms begin after the acute phase of bilirubin encephalopathy in the first year of life, evolve slowly over several years, and include mild to severe extrapyramidal disturbances (especially dystonia and athetosis), auditory neuropathy spectrum disorder, and oculomotor and dental abnormalities. |
en |
Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare disorder of ketone body transport characterised by recurrent episodes of ketoacidosis provoked by fasting or infections in the first years of life. The episodes are typically preceded by poor feeding and vomiting and are associated with dehydration, in severe cases also with decreased consciousness and insufficient respiratory drive. Hypoglycaemia is observed only infrequently. Patients with homozygous mutations tend to present at a younger age, have more profound ketoacidosis, and may show mild to moderate developmental delay in addition. |
en |
Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare multiple congenital anomalies/dysmorphic syndrome characterized by diffuse cartilage calcification, brachytelephalangism, peripheral pulmonary artery stenoses and facial dysmorphism. Vascular calcification has been reported in some cases. |
en |
Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare inherited epidermolysis bullosa (EB) characterized by skin fragility and blistering at birth followed by development of photosensitivity and progressive poikilodermatous skin changes. |
en |
Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| King-Denborough syndrome is a rare genetic non-dystrophic myopathy characterized by the triad of congenital myopathy, dysmorphic features and susceptibility to malignant hyperthermia. Patients present with a wide phenotypic range, including delayed motor development, muscle weakness and fatigability, ptosis and facies myopathica (with or without creatine kinase elevations), skeletal abnormalities (e.g. short stature, scoliosis, kyphosis, lumbar lordosis and pectus carinatum/excavatum), mild dysmorphic facial features (e.g. hypertelorism, down-slanting palpebral fissures, epicanthic folds, low set ears, micrognathia), webbing of the neck, cryptorchidism, and a susceptibility to malignant hyperthermia and/or rhabdomyolysis due to intensive physical strain, viral infection or statin use. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare genetic, intellectual disability syndrome characterized by intellectual disability, childhood hypotonia, severe expressive speech delay, autism spectrum disorder, and a distinctive facial appearance with a spectrum of additional clinical features. |
en |
Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare congenital complex vascular malformation syndrome characterized by capillary malformations manifesting as wine stains and venous varicosities typically prominent along the lateral aspect of the lower extremities, associated with overgrowth of a limb (most commonly a leg, less frequently other regions of the body), involving bone and/or soft tissues. The diagnosis is usually made in presence of at least two of these three features. Lymphatic malformations are also observed, while arteriovenous fistulas are absent. Patients present recurrent painful thrombophlebitis, venous thrombosis, and sudden venous hemorrhage. |
en |
Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare genetic disease characterized by the association of Klippel-Feil anomaly (fusion of the cervical spine), myopathy, hypotonia, short stature, microcephaly, and facial dysmorphism (including low-set ears, bulbous nose, long philtrum, high-arched palate, and low posterior hairline, among others). Cardiac abnormalities and various skeletal anomalies (such as pectus excavatum or clinodactyly) have also been reported. |
en |
Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare multisystem disorder characterised by neonatal/childhood hypotonia, mild to moderate developmental delay or intellectual disability, epilepsy, dysmorphic facial features, hypermetropia, congenital heart anomalies, congenital renal/urologic anomalies, musculoskeletal problems, and a friendly/amiable disposition. |
en |
Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare genetic multiple congenital anomalies/dysmorphic syndrome characterized by postnatal tall stature with long hands and feet, scoliosis, distinctive dysmorphic facial features (prominent forehead, proptosis, downslanting palpebral fissures, broad nasal bridge, thin upper lip, and pointed chin), hyperelastic, thin, and fragile skin, lipodystrophy, and variable intellectual disability and neurological deterioration. Additional reported manifestations include craniosynostosis, camptodactyly, progressive flexion contractures, joint dislocation, and cerebrovascular complications, among others. Brain MRI may show extensive periventricular white matter lesions and other anomalies. |
en |
Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| Kostmann syndrome is a rare, severe, congenital neutropenia disorder characterized by a lack of mature neutrophils (absolute neutrophil counts less than 500 cells/mm3) associated with frequent, recurrent bacterial infections (e.g. otitis media, pneumonia, sinusitis, urinary tract infections, abscesses of skin and/or liver) and increased promyelocytes in the bone marrow. Periodontal disease, as well as neurological symptoms, such as cognitive impairment, severe neurodegeneration and epilepsy, have been reported in some patients. |
en |
Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| Spondylometaphyseal dysplasia, Kozlowski type is characterized by short stature (short-trunk dwarfism), scoliosis, metaphyseal abnormalities in the femur (prominent in the femoral neck and trochanteric area), coxa vara and generalized platyspondyly. Prevalence is estimated at less than one in one million people. Intelligence is usually normal. The syndrome is caused by a mutation in the TRPV4 gene (12q24.1) and is transmitted in an autosomal dominant manner. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| Kufor-Rakeb syndrome (KRS) is a rare genetic neurodegenerative disorder characterized by juvenile parkinsonism, pyramidal degeneration (dystonia), supranuclear palsy, and cognitive impairment. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare complex hereditary spastic paraplegia characterized by neonatal to infantile onset of progressive spasticity in the lower limbs, hyperreflexia, tip-toe walking, pes equinus, and delayed motor developmental milestones. Kyphoscoliosis becomes evident in older patients, and most patients show atrophy of the lateral aspects of the tongue. Additional signs may include intellectual disability, language impairment, and moderate upper limb involvement. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare genetic skeletal muscle disease characterized by neonatal to childhood onset of slowly progressive muscle weakness and atrophy primarily affecting the lower limbs, joint contractures, kyphosis or lordosis of the spine, lateral tongue atrophy, and pes equinus. Progression to upper limb involvement, facial weakness, language impairment, intellectual disability, and behavioral abnormalities have been reported in addition. Muscle biopsy shows myopathic changes with increased fiber size variation, internalized nuclei, fiber atrophy, as well as rod structures and core targetoid defects. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare genetic hematologic disease characterized by decreased or undetectable serum L-ferritin with otherwise normal laboratory parameters. Clinical signs and symptoms include generalized seizures, atypical restless leg syndrome, mild neuropsychologic impairment, and progressive hair loss. Asymptomatic cases have also been reported. |
en |
Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| Laing distal myopathy, also called myopathy distal, type 1 (MPD1), is characterized by early-onset selective weakness of the great toe and ankle dorsiflexors, and a very slowly progressive course. |
en |
Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare genetic syndromic intellectual disability characterized by global developmental delay and speech delay, variable degrees of intellectual disability, and dysmorphic facial features (such as frontal bossing, epicanthal folds, strabismus, depressed nasal bridge, short philtrum, auricular abnormalities, micrognathia, or crowded teeth, among others). Additional reported manifestations are behavioral problems (stereotypies, aggression, anxiety, autism spectrum disorder), skeletal anomalies (scoliosis, pectus carinatum, clinodactyly of fingers and toes, among others), and seizures. |
en |
Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| LMNA-related cardiocutaneous progeria syndrome is a rare, genetic, premature aging syndrome characterized by adulthood-onset cutaneous manifestations that result in a prematurely aged appearance (i.e. premature thinning and graying of scalp hair, loss of subcutaneous fat, tightening of skin) associated with prominent cardiovascular manifestations, such as accelerated atherosclerosis, calcific valve disease, and cardiomyopathy. Patients present loss of eyebrows and eyelashes in childhood and have a predisposition to develop malignancies. |
en |
Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare autosomal recessive limb-girdle muscular dystrophy characterized by childhood to adult onset of slowly progressive limb girdle muscular weakness, often accompanied by calf hypertrophy, and moderately elevated creatine kinase levels. Patients remain ambulatory but may variably present mild intellectual disability, seizures, migraine, or cardiopulmonary involvement. Occurrence of dilated cardiomyopathy has been reported. Brain MRI typically shows hyperintensity in T2-weighted sequences. Muscle biopsy commonly reveals dystrophic features. |
en |
Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare genetic systemic or rheumatologic disease characterized by infantile onset of skin anomalies (such as delayed wound healing with atrophic scars and mild alopecia with dry and brittle hair), retinal rod degeneration with night blindness, degenerative myopathy with muscle weakness, myalgia, and cramps, osteoarthritis, joint laxity, prolapse of internal organs, floating kidney syndrome, malabsorption syndrome, and hypothyroidism. The phenotype has been reported to be more severe in women than in men. |
en |
Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare skin hamartoma characterized by at least one pigmented skin lesion present at birth of more than 20 cm (large congenital melanocytic nevus; LCMN) or 40 cm (giant; GCMN) projected adult diameter. The primary lesion is composed of mutated melanocytes and often locally disorganized epidermal annexes or dermis, and presents with an elevated risk of malignant transformation to melanoma or, more rarely, other neoplasms in skin or central nervous system. |
en |
Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| This syndrome is characterized by severe growth retardation associated with immunodeficiency. |
en |
Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| Larsen-like osseous dysplasia-short stature syndrome is a rare primary bone dysplasia characterized by a Larsen-like phenotype including multiple, congenital, large joint dislocations, craniofacial abnormalities (i.e. macrocephaly, flat occiput, prominent forehead, hypertelorism, low-set, malformed ears, flat nose, cleft palate), spinal abnormalities, cylindrical fingers, and talipes equinovarus, as well as growth retardation (resulting in short stature) and delayed bone age. Other reported clinical manifestations include severe developmental delay, hypotonia, clinodactyly, congenital heart defect and renal dysplasia. |
en |
Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| Larsen-like syndrome, B3GAT3 type is a rare, genetic, primary bone dysplasia characterized by laxity, dislocations and contractures of the joints, short stature, foot deformities (e.g. clubfeet), broad tips of fingers and toes, short neck, dysmorphic facial features (hypertelorism, downslanting palpebral fissures, upturned nose with anteverted nares, high arched palate) and various cardiac malformations. Severe disease is associated with multiple fractures, osteopenia, arachnodactyly and blue sclerae. A broad spectrum of additional features, including scoliosis, radio-ulnar synostosis, mild developmental delay, and various eye disorders (glaucoma, amblyopia, hyperopia, astigmatism, ptosis), are also reported. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare X-linked syndromic intellectual disability characterized by congenital and permanent vocal cord paralysis causing severe congenital laryngeal stridor, associated with intellectual disability in male patients. Other presenting symptoms may include weak cry, cough, cyanosis, neonatal asphyxia, feeding difficulty, aspiration, and bronchiectasis. Microcephaly, tone abnormalities, visual and hearing impairment may also be associated features. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| LOC syndrome is a subtype of junctional epidermolysis bullosa characterized by an altered cry in the neonatal period and by aberrant production of granulation tissue in particular affecting the upper airway tract, conjunctiva and periungual/subungual sites. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A form of citrullinemia type I characterized clinically by adult onset of symptoms including variable hyperammonemia and less striking neurological findings which may include intense headache, scotomas, migraine-like episodes, ataxia, slurred speech, lethargy and drowsiness. Serious increased intracranial pressure may occur. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare, genetic, non-dystrophic myofibrillar myopathy disorder characterized by late-adult onset of distal and/or proximal limb muscle weakness with initial involvement of posterior lower leg muscles, medial gastrocnemius and soleus. Patients present with ankle weakness followed by weakness of finger and wrist extensors and later on of proximal muscles. Ambulation is usually preserved. Late-onset associated cardiomyopathy and/or neuropathy has been reported in a minority of cases. |
en |
Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| Late-onset focal dermal elastosis is a rare, acquired, dermis elastic tissue disorder characterized by a pseudoxanthoma elasticum-like papular eruption consisting of multiple, slowly progressive, asymptomatic, 2-5 mm, white to yellowish, non-follicular papules (that tend to form cobblestone plaques) predominantly distributed over the neck, axillae and flexural areas, with no systemic involvement. Skin biopsy reveals a focal increase of normal-appearing elastic tissue in the reticular dermis with no calcium deposits. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| Late-onset isolated ACTH deficiency is a rare, acquired, pituitary hormone deficiency characterized by secondary adrenal insufficiency, with normal secretion of anterior pituitary hormones, except for ACTH. Patients present with weakness, fatigue, weight loss, anorexia, vomiting/nausea, hypoglycemia, and abnormally low serum ACTH and cortisol levels. Association with autoimmune disease such as Hashimoto's thyroiditis has been described. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A form of junctional epidermolysis bullosa characterized by onset in childhood or young adulthood of blistering that first occurs around nails, accompanied by nail dystrophy and shedding, and then affects the hands and feet and, to a lesser extent, the elbows, and knees. Lesions heal with atrophic scarring. Other manifestations include disappearance of dermatoglyphs and palmoplantar hyperhidrosis. Extracutaneous involvement is restricted to soft tissue abnormalities of the oral cavity and enamel defects with development of caries. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare junctional epidermolysis bullosa subtype characterized by late-onset blistering surrounded by erythema and localized on the anterior aspect of the lower legs, associated with dystrophic toenails, tooth enamel defects and mild to severe intellectual disability. Lens subluxation and mild facial dysmorphism (with short midface, prognathism and thin upper lip vermilion) are additional reported features. There have been no further descriptions in the literature since 1992. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| Lathosterolosis is an extremely rare inborn error of sterol biosynthesis characterized by facial dysmorphism, congenital anomalies (including limb and kidney anomalies), failure to thrive, developmental delay and liver disease. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| Laubry-Pezzi syndrome is a rare, non-syndromic, congenital heart malformation characterized by the prolapse of an aortic valve cusp into a subjacent ventricular septal defect due to Venturi effect, resulting in aortic regurgitation. Patients typically present with symptoms of progressive aortic valve insufficiency, such as shortness of breath, heart palpitations, chest pain and exercise intolerance. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare inherited mitochondrial disease characterized by the clinical features of Leber hereditary optic neuropathy in combination with other systemic or neurological abnormalities. These abnormalities include postural tremor, motor disorder, multiple sclerosis-like syndrome, spinal cord disease, skeletal changes, Parkinsonism with dystonia, anarthria, motor and sensory peripheral neuropathy, spasticity, mild encephalopathy, and cardiac arrhythmias. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| LCAT (lecithin-cholesterol acyltransferase) deficiency is a rare lipoprotein metabolism disorder characterized clinically by corneal opacities, and sometimes renal failure and hemolytic anemia, and biochemically by severely reduced HDL cholesterol. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare, syndromic renal disease characterized by the entrapment of left renal vein (LRV) between the superior mesenteric artery (SMA) and the abdominal aorta, resulting in increased luminal pressure, renal hilar varices, hematuria and, at the microscopic level, rupture of thin-walled veins into the collecting system in renal fornices. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| Orbital leiomyoma is a rare benign smooth muscle tumor arising from the walls of orbital vessels characterized by its slow growth and well encapsulated nature. It is usually located in an extraconal position, commonly manifesting with painless proptosis. The tumor is composed of spindle cells arranged in a fibrous stroma rich in dilated sinusoidal capillaries. The nuclei of tumor cells are oval with blunted ends and there are no mitotic figures. Orbital leiomyoma when excised has excellent prognosis for vision and life. One case of orbital leiomyosarcoma that possibly represents sarcomatous change in an orbital leiomyoma following radiation treatment has been reported. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| Leiomyosarcoma of the cervix uteri is a rare, malignant mesenchymal tumor of smooth muscle origin, macroscopically appearing as a large, poorly circumscribed mass, often protruding from the cervical canal or expanding it circumferentially. The most common presenting symptoms are vaginal discharge or bleeding, pain in the lower abdomen and a bulky cervical mass. There is a reported tendency to metastasize hematogenously, especially to the lungs, peritoneum, bones and the liver. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| Leiomyosarcoma of the corpus uteri is a rare, malignant, mesenchymal tumor of smooth muscle origin characterized, histologically, by spindle and/or pleomorphic cells, often forming disorganized fascicles, with tumor cell necrosis and, macroscopically, by a large, soft, usually intramural mass with irregular borders and necrotic and hemorrhagic areas, located in the uterus. Presenting signs and symptoms typically include dysfunctional vaginal bleeding, vaginal discharge, palpable pelvic mass and/or pelvic pain/pressure. Changes in bowel habits, frequent or painful urination and hematuria may also be associated. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| Small bowel leiomyosarcoma is a rare type of small bowel malignancy, originating in the smooth muscle cells within the muscularis propria or the muscularis mucosa, most often found in the jejunum, and presenting with gastrointestinal bleeding and anemia and sometimes with other non-specific symptoms such as vomiting, nausea, abdominal pain and weakness and spreading to regional lymph nodes in 14% of cases. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| Lemierre syndrome is a rare, potentially lethal, oropharyngeal infectious disease occurring in immunocompetent adolescents and young adults that is mainly due to Fusobacterium necrophorum and that is characterised by septic thrombophlebitis of the internal jugular vein that leads to septic, usually pulmonary, embolism, associated with ENT (ear, nose, and throat) infection that manifests with fever, neck pain, and tonsillopharyngitis. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare developmental defect with connective tissue involvement characterized by multiple joint dislocations, flattened facial appearance, abnormal palmar creases, laryngotracheomalacia, and pulmonary hypoplasia. Additional signs may include a bifid tongue, micrognathia, non-immune hydrops fetalis, and brain dysplasia. The disease is lethal shortly after birth due to respiratory insufficiency. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| Lethal acantholytic epidermolysis bullosa is a suprabasal subtype of epidermolysis bullosa simplex characterized by generalized oozing erosions, usually in the absence of blisters. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare, genetic, vascular disorder characterized by severe aneurysmal dilatation, elongation, and tortuosity of the thoracic aorta, its branches and pulmonary arteries with stenosis at various typical locations, typically resulting in infantile demise. Variable associated features may include cutis laxa, long philtrum with thin vermillion border, hypertelorism, sagging cheeks, arachnodactyly, joint laxity and pectus deformities. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare genetic lethal multiple congenital anomalies/dysmorphic syndrome characterized by early intrauterine growth retardation, generalized edema, craniofacial dysmorphism (such as microcephaly, brachycephaly, frontal bossing, hypertelorism, short palpebral fissures, or absent nasal bone), cerebellar hypoplasia, sex reversal in male fetuses, congenital heart defects (including septal and valve defects and cardiomegaly), and late fetal loss. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| Lethal congenital contracture syndrome type 1 is a rare, genetic arthrogryposis syndrome characterized by total fetal akinesia (detectable since the 13th week of gestation) accompanied by hydrops, micrognathia, pulmonary hypoplasia, pterygia and multiple joint contractures (usually flexion contractures in the elbows and extension in the knees), leading invariably to death before the 32nd week of gestation. Lack of anterior horn motoneurons, severe atrophy of the ventral spinal cord and severe skeletal muscle hypoplasia are characteristic neuropathological findings, with no evidence of other organ structural anomalies. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| Lethal congenital contracture syndrome type 2 is a rare arthrogryposis syndrome characterized by multiple congenital contractures (typically extended elbows and flexed knees), micrognathia, anterior horn cell degeneration, skeletal muscle atrophy (mainly in the lower limbs), presence of a markedly distended urinary bladder and absence of hydrops, pterygia and bone fractures. Other craniofacial (e.g. cleft palate, facial palsy) and ocular (e.g. anisocoria, retinal detachment) anomalies may be additionally observed. The disease is usually neonatally lethal however, survival into adolescence has been reported. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| An extremely rare polymalformative syndrome. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare genetic lethal multiple congenital anomalies/dysmorphic syndrome characterized by mid-gestation lethality and features of a ciliopathy. Clinical manifestations include hydrocephalus, cerebellar vermis hypoplasia, corpus callosum agenesis, duodenal atresia, gastrointestinal malrotation, bilateral renal hypoplasia, and dysmorphic craniofacial features (such as microcephaly, hypertelorism, low-set ears, prominent nose, short columella, cleft palate, micrognathia, and wide mouth). |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| Lethal fetal cerebrorenogenitourinary agenesis/hypoplasia syndrome is a rare, genetic developmental defect during embryogenesis malformation syndrome characterized by intrauterine growth restriction, flexion arthrogryposis of all joints, severe microcephaly, renal cystic dysplasia/agenesis/hypoplasia and complex malformations of the brain (cerebral and cerebellar hypoplasia, vermis, corpus callosum and/or occipital lobe agenesis, with or without arhinencephaly), as well as of the genitourinary tract (ureteral agenesis/hypoplasia, uterine hypoplasia and/or vaginal atresia), leading to fetal demise. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare genetic disease characterized by lethal non-spherocytic, non-immune hemolytic anemia, in association with abnormalities of the external genitalia (such as micropenis and hypospadias). Reported dysmorphic features include flat occiput, dimpled earlobes, deep plantar creases, and increased space between the first and second toes. There have been no further descriptions in the literature since 1995. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| Lethal hydranencephaly-diaphragmatic hernia syndrome is a rare, genetic, lethal, multiple congenital anomalies syndrome characterized by hydranencephaly and diaphragmatic hernia, as well as macrocephaly, a widely open anterior fontanel, scaphoid abdomen and hypotonia. Additionally, congenital heart defects, polyhydramnios and pulmonary hypertension have also been associated. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| Lethal infantile mitochondrial myopathy is a rare mitochondrial oxidative phosphorylation disorder characterized by progressive generalized hypotonia, progressive external ophthalmoplegia and severe lactic acidosis, which results in early fatality (days to months after birth). Patients may present with lethargy and areflexia and may associate additional features, such as cardiomyopathy, renal dysfunction, liver involvement and seizures. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| Lethal left ventricular non-compaction-seizures-hypotonia-cataract-developmental delay syndrome is rare, genetic, neurometabolic disease characterized by global developmental delay, severe hypotonia, seizures, cataracts, cardiomyopathy (including left or bi-ventricular hypertrophy, dilated cardiomyopathy) and left ventricular non-compaction, typically resulting in infantile or early-childhood death. Patients usually present metabolic lactic acidosis, failure to thrive, head lag, respiratory problems and decrease in respiratory chain complex activity. Highly variable cerebral abnormalities have been reported and include microcephaly, prominent extra-axial cerebrospinal fluid spaces, diffuse neuronal loss and cortical/white matter gliosis. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare genetic neurological disorder characterized by neonatal onset of rigidity and intractable seizures, with episodic jerking already beginning in utero. Affected infants have small heads, remain visually inattentive, do not feed independently, and make no developmental progress. Frequent spontaneous apnea and bradycardia usually culminate in cardiopulmonary arrest and death in infancy, although some cases were described with a milder clinical course and survival into childhood. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| Lethal occipital encephalocele-skeletal dysplasia syndrome is a rare, genetic, bone development disorder characterized by occipital and parietal bone hypoplasia leading to occipital encephalocele, calvarial mineralization defects, craniosynostosis, radiohumeral fusions, oligodactyly and other skeletal anomalies (arachnodactyly, terminal phalangeal aplasia of the thumbs, bilateral absence of the great toes, pronounced bilateral angulation of femora, shortened limbs, advanced osseous maturation). Fetal death in utero is associated. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare multiple congenital anomalies/dysmorphic syndrome characterized by the association of omphalocele and cleft palate. Other reported features include cleft lip, bifid uvula, bilateral talipes equinovarus, bicornuate uterus, and hydrocephalus internus. The condition is lethal in infancy. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare, genetic, lethal, multiple congenital anomalies/dysmorphic syndrome characterized by failure to thrive, severe developmental delay, severe postnatal microcephaly, frequent congenital cardiac defects and characteristic facial dysmorphism (including coarse face with anteverted nostrils, thin vermillion, prominent alveolar ridge and retro- or micrognathia). Additional common features include neurologic abnormalities (hyper-/hypotonia, sensorineural deafness, hydrocephalus, cerebral atrophy, seizures), as well as brachydactyly, cutis marmorata and genital anomalies. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare multiple congenital anomalies/dysmorphic syndrome characterized by pontocerebellar hypoplasia, hypotonia and respiratory insufficiency. Cardiac anomalies (particularly hypertrophic cardiomyopathy), eye manifestations (congenital cataracts, corneal clouding), seizures and facial dysmorphism (including microcephaly, bitemporal narrowing, absence of eyelashes, short palpebral fissures, small and low-set ears, anteverted nares, microstomia, and micrognathia) are present in the majority of the patients. Additional findings such as hepatosplenomegaly, edema, micropenis/cryptorchidism, hypoglycemia, hypernatremia, increased triglycerides, elevated plasma lactate and decreased plasma cholesterol were reported. Brain imaging may reveal simplified/delayed cortical gyration, dilated ventricles, and periventricular or diffuse white matter abnormalities. It is mostly caused by biallelic deletions in the ATAD3 gene cluster (ATAD3A, ATAD3B and ATAD3C) or by point mutations in the ATAD3A gene. Even though the syndrome is mostly neonatally lethal, some patients, regardless of the type of the mutation/deletion they harbor, may have a less severe condition and may survive. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| Lethal recessive chondrodysplasia is an extremely rare lethal form of chondrodysplasia characterized by severe micromelic dwarfism, short and incurved limbs with normal hands and feet, facial dysmorphism (disproportionately large skull, frontal prominence, slightly flattened nasal bridge and short neck), muscular hypotonia, hyperlaxity of the extremities, and a narrow thorax. Most patients die of respiratory distress during the first hours or weeks of life. There have been no further descriptions in the literature since 1988. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A form of leucocyte adhesion deficiency characterised by both severe bacterial infections and a severe bleeding disorder. The disease is extremely rare. Caused by mutations in the FERMT3 gene (11q13.1), which encodes kindlin-3 in haematopoietic cells. The FERMT3 mutations lead to an activation defect of all beta-integrins. Transmission is autosomal recessive. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare, systemic amyloidosis characterized by slowly progressive renal disease presenting with proteinuria, hypertension and decreased glomerular filtration rate leading to progressive renal failure. Histology reveals amyloid deposits of leukocyte chemotactic factor-2 protein in the renal cortical interstitium, tubular basement membranes, glomeruli and the vessel walls. Extra-renal deposits can be seen in the liver, lungs, spleen and adrenal glands. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare genetic leukodystrophy characterized by infantile onset of stagnation and regression of motor and language development resulting in complete lack of communication and purposeful movement. Further neurological manifestations include truncal hypotonia, appendicular spasticity, dystonia, optic disc pallor, peripheral neuropathy, and neurogenic bladder. Patients also present multiple contractures, late-onset relative macrocephaly, short stature, and facial dysmorphism (including coarse facial features, sloping forehead, thick eyebrows, low-set ears, prominent nose, flat philtrum, and prominent lower lip). Brain imaging at advanced stages shows diffuse abnormal white matter signal and severe atrophy. Sural nerve biopsy reveals decreased myelination. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare, nonprogressive, neurological disorder marked by intellectual deficit, spasticity and motor retardation associated with characteristic MRI findings of anterior bilateral temporal lobe cysts and multilobar leukoencephalopathy. So far, around 30 cases have been reported in the literature. Onset occurs in the first few months of life. Sensorineural deafness and microcephaly have also been reported. The etiology is unknown but an autosomal recessive mode of inheritance has been suggested. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| This disease is characterized by progressive cerebellar ataxia with pyramidal and spinal cord dysfunction, associated with distinctive MRI anomalies and increased lactate in the abnormal white matter. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare genetic cerebral small vessel disease characterized by leukoencephalopathy and cerebral calcification and cysts due to diffuse cerebral microangiopathy resulting in microcystic and macrocystic parenchymal degeneration. The condition can present at any age from early childhood to late adulthood and manifests as a progressive cerebral degeneration. Symptoms are variable, but restricted to the central nervous systems, and include, among others, slowing of cognitive performance, seizures, and movement disorder with a combination of pyramidal, extrapyramidal, and cerebellar features. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare genetic neurological disorder characterized by the association of hypomyelinating leukodystrophy with spondylometaphyseal dysplasia. Patients present in infancy with absent or delayed ability to walk independently, slowly progressive motor deterioration, spasticity, ataxia, proximal weakness, and joint contractures. Additional manifestations include mild cognitive impairment, short stature, scoliosis, enlarged and deformed joints, dysarthria, nystagmus, visual defects, and mildly dysmorphic features, among others. Mode of inheritance is X-linked recessive. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare neurologic disease characterized by a specific pattern of white matter abnormalities on brain imaging (magnetic resonance imaging), as well as mild ataxia, headaches, mild visual impairment, learning difficulties and cases of male infertility. |
en |
Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| Leukoencephalopathy-dystonia-motor neuropathy syndrome is a peroxisomal neurodegenerative disorder characterized by spasmodic torticollis, dystonic head tremor, intention tremor, nystagmus, hyposmia, and hypergonadotrophic hypogonadism with azoospermia. Slight cerebellar signs (left-sided intention tremor, balance and gait impairment) are also noted. Magnetic resonance imaging (MRI) shows bilateral hyperintense signals in the thalamus, butterfly-like lesions in the pons, and lesions in the occipital region, whereas nerve conduction studies of the lower extremities shows a predominantly motor and slight sensory neuropathy. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| Leukoencephalopathy-palmoplantar keratoderma syndrome is a rare, genetic epidermal disease characterized by early childhood-onset of punctate palmoplantar keratoderma in association with adult-onset leukoencephalopathy manifested by progressive tetrapyramidal syndrome and cognitive deterioration. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare, genetic neurological disorder defined by early-onset of neurologic symptoms, biphasic clinical course, unique MRI features (including extensive, symmetrical, deep white matter abnormalities), and increased lactate in body fluids. The severe form is characterized by delayed psychomotor development, seizures, early-onset hypotonia, and persistently increased lactate levels. The mild form usually presents with irritability, psychomotor regression after six months of age, and temporary high lactate levels, with overall clinical improvement from the second year onward. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| Leukonychia totalis is a rare nail anomaly disorder characterized by complete white discoloration of the nails. Patients typically present white, chalky nails as an isolated finding, although other cutaneous or systemic manifestations could also be present. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| Leukonychia totalis-acanthosis-nigricans-like lesions-abnormal hair syndrome is a rare, syndromic nail anomaly disorder characterized by the association of leukonychia totalis with acanthosis-nigricans-like lesions (occurring in the neck, axillae and abdomen regions) and hair dysplasia, manifesting with dry, brittle hair which presents an irregular pattern of complete or incomplete twists and an irregular surface with longitudinal furrows on electronic microscopy. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| FLOTCH syndrome is a rare, genetic, cutaneous disorder characterized by leukonychia and multiple, recurrent pilar cysts, associated or not with ciliar dystrophy and/or koilonychia. Renal calculi have also been reported. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| Lichen amyloidosis is a rare chronic form of cutaneous amyloidosis, a skin disease characterized by the accumulation of amyloid deposits in the dermis, clinically characterized by the development of pruritic, often pigmented, hyperkeratotic papules on trunk and extremities, especially on the shins, and histologically by the deposition of amyloid or amyloid-like proteins in the papillary dermis. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| Lichen planus (LP) pigmentosus is a rare variant of cutaneous lichen planus characterized by the presence of hyperpigmented lichenoid lesions in sun-exposed or flexural areas of the body. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare genetic disease characterized by frequent infections associated with neutropenia and IgA deficiency, in combination with osteoporosis and skeletal anomalies, such as posterior spinal arch fusion defect, metacarpal subluxation, syndactyly, and camptodactyly. Reported dysmorphic features include synophrys, anteverted nostrils, and single palmar crease. There have been no further descriptions in the literature since 1972. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| LIG4 syndrome is a hereditary disorder associated with impaired DNA double-strand break repair mechanisms and characterized by microcephaly, unusual facial features, growth and developmental delay, skin anomalies, and pancytopenia, which is associated with combined immunodeficiency (CID). |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| Limb body wall complex (LBWC) is characterized by severe multiple congenital anomalies in the fetus with exencephaly/encephalocele, thoraco- and/or abdominoschisis (anterior body wall defects) and limb defects, with or without facial clefts. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| Limb-girdle muscular dystrophy due to POMK deficiency is a form of limb-girdle muscular dystrophy presenting in infancy with muscle weakness and delayed motor development (eventually learning to walk at 18 months of age) followed by progressive proximal weakness, pseudohypertrophy of calf muscles, mild facial weakness, and borderline intelligence. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare, genetic, ectodermal dysplasia syndrome characterized by severe hand/foot anomalies, breast and/or nipple hypoplasia, and ectodermal dysplasia (principally teeth and nail anomalies). Cleft lip/palate may be variably present. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare limbic encephalitis characterized by the presence of autoantibodies against NMDA receptors in serum and cerebrospinal fluid. It may be of paraneoplastic (most commonly associated with ovarian teratoma) or non-paraneoplastic origin and is life-threatening but potentially treatable. Patients present with acute behavioral change, psychosis, and catatonia, rapidly progressing to seizures, memory deficit, dyskinesias, speech problems, and autonomic and breathing dysregulation. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| Linear focal elastosis is a rare, acquired, dermis elastic tissue disorder characterized by asymptomatic, palpable, hypertrophic or atrophic, yellowish or red, indurated, horizontal, striae-like linear plaques distributed symmetrically across the mid and lower back. No systemic involvement has been described. Skin biopsy reveals a focal increase in abnormal elastic tissue with abundant, wavy, fragmented and aggregated, basophilic elastic fibers in the reticular dermis. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
| A rare ectodermal dysplasia syndrome characterized by linear hypopigmentation and hypotrichosis following the lines of Blaschko, symmetric or asymmetric facial dysmorphism, and body asymmetry, in association with ocular, dental, and acral anomalies. Reported manifestations include microphthalmia, strabismus, myopia, oligodontia, microdontia, conical teeth, abnormal enamel, brachydactyly, syndactyly, and broad first toe, as well as dysmorphic facial features such as downslanting palpebral fissures, broad nasal bridge, malar hypoplasia, and microstomia. Brain imaging may show cystic leukoencephalopathy and ventricular dilation. |
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Attributed to a particular organization or group that contributes content to SNOMED CT. |
Inserm Orphanet |
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