39322007: Trochlear nerve structure (body structure)

SNOMED CT Concept\Body structure (body structure)\Anatomical or acquired body structure (body structure)\Anatomical structure\...

\Body system structure\Structure of subdivision of organ system (body structure)\Structure of subdivision of nervous system (body structure)\Peripheral nervous system structure\Peripheral nerve structure\Regional peripheral nerve\Structure of peripheral nerve of head and/or neck (body structure)\Trochlear nerve structure
\Body system structure\Structure of special senses organ system\The eye, ocular adnexa, afferent visual pathways, efferent visual pathways, and pupil innervation pathways\Oculomotor system structure (body structure)\Trochlear nerve structure
\Body system structure\Structure of nervous system (body structure)\Structure of subdivision of nervous system (body structure)\Peripheral nervous system structure\Peripheral nerve structure\Regional peripheral nerve\Structure of peripheral nerve of head and/or neck (body structure)\Trochlear nerve structure
\Body system structure\Structure of nervous system (body structure)\Structure of regional nervous system (body structure)\Structure of nervous system of head and neck (body structure)\Structure of peripheral nerve of head and/or neck (body structure)\Trochlear nerve structure
\Body system structure\Structure of nervous system (body structure)\Nerve structure\Peripheral nerve structure\Regional peripheral nerve\Structure of peripheral nerve of head and/or neck (body structure)\Trochlear nerve structure
\Body system structure\Structure of nervous system (body structure)\Nerve structure\Cranial nerve structure\Trochlear nerve structure

\Body tissue structure\Structure of soft tissue (body structure)\...

\Peripheral nerve structure\Regional peripheral nerve\Structure of peripheral nerve of head and/or neck (body structure)\Trochlear nerve structure

\Structure of soft tissue of head and/or neck (body structure)\Structure of peripheral nerve of head and/or neck (body structure)\Trochlear nerve structure

\Body region structure\Structure of half of body lateral to midsagittal plane (body structure)\Oculomotor system structure (body structure)\Trochlear nerve structure
\Body region structure\Structure of half of body lateral to midsagittal plane (body structure)\Structure of peripheral nerve of head and/or neck (body structure)\Trochlear nerve structure
\Body region structure\Structure of half of body lateral to midsagittal plane (body structure)\Cranial nerve structure\Trochlear nerve structure
\Body region structure\Regional peripheral nerve\Structure of peripheral nerve of head and/or neck (body structure)\Trochlear nerve structure
\Body region structure\Body part structure\Upper body structure\Upper body part structure\Structure of head and/or neck (body structure)\Structure of nervous system of head and neck (body structure)\Structure of peripheral nerve of head and/or neck (body structure)\Trochlear nerve structure
\Body region structure\Body part structure\Upper body structure\Upper body part structure\Structure of head and/or neck (body structure)\Structure of soft tissue of head and/or neck (body structure)\Structure of peripheral nerve of head and/or neck (body structure)\Trochlear nerve structure

Status: current, Not sufficiently defined by necessary conditions definition status (core metadata concept). Date: 31-Jan 2002. Module: SNOMED CT core

Descriptions:

Expanded Value Set

Outbound Relationships	Type	Target	Active	Characteristic	Refinability	Group	Values
Trochlear nerve structure	Is a	The eye, ocular adnexa, afferent visual pathways, efferent visual pathways, and pupil innervation pathways	false	Inferred relationship	Some
Trochlear nerve structure	Is a	Cranial nerve structure	true	Inferred relationship	Some
Trochlear nerve structure	partie de	Entire visual system	false	Additional relationship	Some
Trochlear nerve structure	partie de	Entire nervous system	false	Additional relationship	Some
Trochlear nerve structure	partie de	Entire head	false	Additional relationship	Some
Trochlear nerve structure	Is a	Oculomotor system structure (body structure)	true	Inferred relationship	Some
Trochlear nerve structure	Is a	Regional peripheral nerve	false	Inferred relationship	Some
Trochlear nerve structure	Laterality	Side (qualifier value)	true	Inferred relationship	Some
Trochlear nerve structure	Is a	Structure of peripheral nerve of head and/or neck (body structure)	true	Inferred relationship	Some

Inbound Relationships	Type	Active	Source	Characteristic	Refinability	Group
Entire trochlear nerve	Is a	True	Trochlear nerve structure	Inferred relationship	Some
Intracranial transection of trochlear nerve (IV)	Procedure site	False	Trochlear nerve structure	Inferred relationship	Some	1
Intracranial destruction of trochlear nerve (IV)	Procedure site	False	Trochlear nerve structure	Inferred relationship	Some
Excision of lesion of trochlear nerve (IV) (procedure)	Procedure site	False	Trochlear nerve structure	Inferred relationship	Some	1
Repair of trochlear nerve (IV)	Procedure site	False	Trochlear nerve structure	Inferred relationship	Some	1
Exploration of trochlear nerve (IV)	Procedure site	False	Trochlear nerve structure	Inferred relationship	Some	1
Injury to trochlear nerve	Finding site	False	Trochlear nerve structure	Inferred relationship	Some
Multiple cranial nerve palsies of ocular motor nerves	Finding site	False	Trochlear nerve structure	Inferred relationship	Some
Trochlear nerve injury (disorder)	Finding site	False	Trochlear nerve structure	Inferred relationship	Some	1
Neoplasm of trochlear nerve	Finding site	False	Trochlear nerve structure	Inferred relationship	Some	1
Fourth nerve palsy	Finding site	True	Trochlear nerve structure	Inferred relationship	Some	1
Cavernous sinus syndrome	Finding site	True	Trochlear nerve structure	Inferred relationship	Some	3
Injury of trochlear nerve	Finding site	False	Trochlear nerve structure	Inferred relationship	Some	1
Benign neoplasm of trochlear nerve	Finding site	False	Trochlear nerve structure	Inferred relationship	Some	1
Primary malignant neoplasm of trochlear nerve	Finding site	False	Trochlear nerve structure	Inferred relationship	Some	1
Metastatic malignant neoplasm to trochlear nerve	Finding site	False	Trochlear nerve structure	Inferred relationship	Some	1
Neoplasm of uncertain behavior of trochlear nerve	Finding site	False	Trochlear nerve structure	Inferred relationship	Some	1
Tolosa-Hunt syndrome is an ophthalmoplegic syndrome, affecting all age groups, characterised by acute attacks (lasting a few days to a few weeks) of periorbital pain, ipsilateral ocular motor nerve palsies, ptosis, disordered eye movements and blurred vision usually caused by a non-specific inflammatory process in the cavernous sinus and superior orbital fissure. It has an unpredictable course with spontaneous remission occurring in some and recurrence of attacks in others.	Finding site	False	Trochlear nerve structure	Inferred relationship	Some	2
Tolosa-Hunt syndrome is an ophthalmoplegic syndrome, affecting all age groups, characterised by acute attacks (lasting a few days to a few weeks) of periorbital pain, ipsilateral ocular motor nerve palsies, ptosis, disordered eye movements and blurred vision usually caused by a non-specific inflammatory process in the cavernous sinus and superior orbital fissure. It has an unpredictable course with spontaneous remission occurring in some and recurrence of attacks in others.	Finding site	False	Trochlear nerve structure	Inferred relationship	Some	2
Intracranial stereotactic neurolysis of trochlear nerve (IV)	Procedure site	False	Trochlear nerve structure	Inferred relationship	Some	1
Decompression of trochlear nerve (IV)	Procedure site	False	Trochlear nerve structure	Inferred relationship	Some	1
Tolosa-Hunt syndrome is an ophthalmoplegic syndrome, affecting all age groups, characterised by acute attacks (lasting a few days to a few weeks) of periorbital pain, ipsilateral ocular motor nerve palsies, ptosis, disordered eye movements and blurred vision usually caused by a non-specific inflammatory process in the cavernous sinus and superior orbital fissure. It has an unpredictable course with spontaneous remission occurring in some and recurrence of attacks in others.	Finding site	False	Trochlear nerve structure	Inferred relationship	Some	1
Benign neoplasm of trochlear nerve	Finding site	False	Trochlear nerve structure	Inferred relationship	Some	3
Primary malignant neoplasm of trochlear nerve	Finding site	False	Trochlear nerve structure	Inferred relationship	Some	1
Metastatic malignant neoplasm to trochlear nerve	Finding site	False	Trochlear nerve structure	Inferred relationship	Some	1
Neoplasm of uncertain behavior of trochlear nerve	Finding site	False	Trochlear nerve structure	Inferred relationship	Some	1
Tolosa-Hunt syndrome is an ophthalmoplegic syndrome, affecting all age groups, characterised by acute attacks (lasting a few days to a few weeks) of periorbital pain, ipsilateral ocular motor nerve palsies, ptosis, disordered eye movements and blurred vision usually caused by a non-specific inflammatory process in the cavernous sinus and superior orbital fissure. It has an unpredictable course with spontaneous remission occurring in some and recurrence of attacks in others.	Finding site	False	Trochlear nerve structure	Inferred relationship	Some	1
Tolosa-Hunt syndrome is an ophthalmoplegic syndrome, affecting all age groups, characterised by acute attacks (lasting a few days to a few weeks) of periorbital pain, ipsilateral ocular motor nerve palsies, ptosis, disordered eye movements and blurred vision usually caused by a non-specific inflammatory process in the cavernous sinus and superior orbital fissure. It has an unpredictable course with spontaneous remission occurring in some and recurrence of attacks in others.	Finding site	False	Trochlear nerve structure	Inferred relationship	Some	2
Unilateral superior oblique palsy	Finding site	False	Trochlear nerve structure	Inferred relationship	Some
Bilateral superior oblique palsy (disorder)	Finding site	True	Trochlear nerve structure	Inferred relationship	Some	1
Tolosa-Hunt syndrome is an ophthalmoplegic syndrome, affecting all age groups, characterised by acute attacks (lasting a few days to a few weeks) of periorbital pain, ipsilateral ocular motor nerve palsies, ptosis, disordered eye movements and blurred vision usually caused by a non-specific inflammatory process in the cavernous sinus and superior orbital fissure. It has an unpredictable course with spontaneous remission occurring in some and recurrence of attacks in others.	Finding site	False	Trochlear nerve structure	Inferred relationship	Some	2
Tolosa-Hunt syndrome is an ophthalmoplegic syndrome, affecting all age groups, characterised by acute attacks (lasting a few days to a few weeks) of periorbital pain, ipsilateral ocular motor nerve palsies, ptosis, disordered eye movements and blurred vision usually caused by a non-specific inflammatory process in the cavernous sinus and superior orbital fissure. It has an unpredictable course with spontaneous remission occurring in some and recurrence of attacks in others.	Finding site	False	Trochlear nerve structure	Inferred relationship	Some	3
Traumatic injury of trochlear nerve	Finding site	False	Trochlear nerve structure	Inferred relationship	Some	1
Tolosa-Hunt syndrome is an ophthalmoplegic syndrome, affecting all age groups, characterised by acute attacks (lasting a few days to a few weeks) of periorbital pain, ipsilateral ocular motor nerve palsies, ptosis, disordered eye movements and blurred vision usually caused by a non-specific inflammatory process in the cavernous sinus and superior orbital fissure. It has an unpredictable course with spontaneous remission occurring in some and recurrence of attacks in others.	Finding site	False	Trochlear nerve structure	Inferred relationship	Some	2
Tolosa-Hunt syndrome is an ophthalmoplegic syndrome, affecting all age groups, characterised by acute attacks (lasting a few days to a few weeks) of periorbital pain, ipsilateral ocular motor nerve palsies, ptosis, disordered eye movements and blurred vision usually caused by a non-specific inflammatory process in the cavernous sinus and superior orbital fissure. It has an unpredictable course with spontaneous remission occurring in some and recurrence of attacks in others.	Finding site	False	Trochlear nerve structure	Inferred relationship	Some	1
Excision of lesion of trochlear nerve (IV) (procedure)	Procedure site - Direct (attribute)	False	Trochlear nerve structure	Inferred relationship	Some	1
Fourth cranial nerve finding	Finding site	True	Trochlear nerve structure	Inferred relationship	Some	1
Tolosa-Hunt syndrome is an ophthalmoplegic syndrome, affecting all age groups, characterised by acute attacks (lasting a few days to a few weeks) of periorbital pain, ipsilateral ocular motor nerve palsies, ptosis, disordered eye movements and blurred vision usually caused by a non-specific inflammatory process in the cavernous sinus and superior orbital fissure. It has an unpredictable course with spontaneous remission occurring in some and recurrence of attacks in others.	Finding site	False	Trochlear nerve structure	Inferred relationship	Some	2
Tolosa-Hunt syndrome is an ophthalmoplegic syndrome, affecting all age groups, characterised by acute attacks (lasting a few days to a few weeks) of periorbital pain, ipsilateral ocular motor nerve palsies, ptosis, disordered eye movements and blurred vision usually caused by a non-specific inflammatory process in the cavernous sinus and superior orbital fissure. It has an unpredictable course with spontaneous remission occurring in some and recurrence of attacks in others.	Finding site	False	Trochlear nerve structure	Inferred relationship	Some	3
On examination - cranial nerve 4 - intact	Finding site	False	Trochlear nerve structure	Inferred relationship	Some	3
à l'examen : paralysie du quatrième nerf crânien	Finding site	False	Trochlear nerve structure	Inferred relationship	Some	3
Procedure on trochlear nerve (procedure)	Procedure site	True	Trochlear nerve structure	Inferred relationship	Some	1
Tolosa-Hunt syndrome is an ophthalmoplegic syndrome, affecting all age groups, characterised by acute attacks (lasting a few days to a few weeks) of periorbital pain, ipsilateral ocular motor nerve palsies, ptosis, disordered eye movements and blurred vision usually caused by a non-specific inflammatory process in the cavernous sinus and superior orbital fissure. It has an unpredictable course with spontaneous remission occurring in some and recurrence of attacks in others.	Finding site	False	Trochlear nerve structure	Inferred relationship	Some	3
Tolosa-Hunt syndrome is an ophthalmoplegic syndrome, affecting all age groups, characterised by acute attacks (lasting a few days to a few weeks) of periorbital pain, ipsilateral ocular motor nerve palsies, ptosis, disordered eye movements and blurred vision usually caused by a non-specific inflammatory process in the cavernous sinus and superior orbital fissure. It has an unpredictable course with spontaneous remission occurring in some and recurrence of attacks in others.	Finding site	False	Trochlear nerve structure	Inferred relationship	Some	2
Tolosa-Hunt syndrome is an ophthalmoplegic syndrome, affecting all age groups, characterised by acute attacks (lasting a few days to a few weeks) of periorbital pain, ipsilateral ocular motor nerve palsies, ptosis, disordered eye movements and blurred vision usually caused by a non-specific inflammatory process in the cavernous sinus and superior orbital fissure. It has an unpredictable course with spontaneous remission occurring in some and recurrence of attacks in others.	Finding site	False	Trochlear nerve structure	Inferred relationship	Some	3
Tolosa-Hunt syndrome is an ophthalmoplegic syndrome, affecting all age groups, characterised by acute attacks (lasting a few days to a few weeks) of periorbital pain, ipsilateral ocular motor nerve palsies, ptosis, disordered eye movements and blurred vision usually caused by a non-specific inflammatory process in the cavernous sinus and superior orbital fissure. It has an unpredictable course with spontaneous remission occurring in some and recurrence of attacks in others.	Finding site	False	Trochlear nerve structure	Inferred relationship	Some	2
Intracranial transection of trochlear nerve (IV)	Procedure site - Direct (attribute)	False	Trochlear nerve structure	Inferred relationship	Some	1
Intracranial destruction of trochlear nerve (IV)	Procedure site - Direct (attribute)	True	Trochlear nerve structure	Inferred relationship	Some	1
Repair of trochlear nerve (IV)	Procedure site - Direct (attribute)	False	Trochlear nerve structure	Inferred relationship	Some	1
Exploration of trochlear nerve (IV)	Procedure site - Direct (attribute)	False	Trochlear nerve structure	Inferred relationship	Some	1
Intracranial stereotactic neurolysis of trochlear nerve (IV)	Procedure site - Direct (attribute)	False	Trochlear nerve structure	Inferred relationship	Some	1
Decompression of trochlear nerve (IV)	Procedure site - Direct (attribute)	False	Trochlear nerve structure	Inferred relationship	Some	1
Tolosa-Hunt syndrome is an ophthalmoplegic syndrome, affecting all age groups, characterised by acute attacks (lasting a few days to a few weeks) of periorbital pain, ipsilateral ocular motor nerve palsies, ptosis, disordered eye movements and blurred vision usually caused by a non-specific inflammatory process in the cavernous sinus and superior orbital fissure. It has an unpredictable course with spontaneous remission occurring in some and recurrence of attacks in others.	Finding site	False	Trochlear nerve structure	Inferred relationship	Some	2
Tolosa-Hunt syndrome is an ophthalmoplegic syndrome, affecting all age groups, characterised by acute attacks (lasting a few days to a few weeks) of periorbital pain, ipsilateral ocular motor nerve palsies, ptosis, disordered eye movements and blurred vision usually caused by a non-specific inflammatory process in the cavernous sinus and superior orbital fissure. It has an unpredictable course with spontaneous remission occurring in some and recurrence of attacks in others.	Finding site	False	Trochlear nerve structure	Inferred relationship	Some	1
Intracranial stereotactic neurolysis of trochlear nerve (IV)	Procedure site - Direct (attribute)	False	Trochlear nerve structure	Inferred relationship	Some	1
Intracranial stereotactic neurolysis of trochlear nerve (IV)	Procedure site - Direct (attribute)	True	Trochlear nerve structure	Inferred relationship	Some	1
Benign neoplasm of trochlear nerve	Finding site	True	Trochlear nerve structure	Inferred relationship	Some	1
Decompression of trochlear nerve (IV)	Procedure site - Direct (attribute)	True	Trochlear nerve structure	Inferred relationship	Some	1
Primary malignant neoplasm of trochlear nerve	Finding site	True	Trochlear nerve structure	Inferred relationship	Some	1
Traumatic injury of trochlear nerve	Finding site	False	Trochlear nerve structure	Inferred relationship	Some	1
Intracranial transection of trochlear nerve (IV)	Procedure site - Direct (attribute)	True	Trochlear nerve structure	Inferred relationship	Some	1
Trochlear nerve injury (disorder)	Finding site	True	Trochlear nerve structure	Inferred relationship	Some	1
Neoplasm of uncertain behavior of trochlear nerve	Finding site	True	Trochlear nerve structure	Inferred relationship	Some	1
Neoplasm of trochlear nerve	Finding site	True	Trochlear nerve structure	Inferred relationship	Some	1
Metastatic malignant neoplasm to trochlear nerve	Finding site	True	Trochlear nerve structure	Inferred relationship	Some	1
Exploration of trochlear nerve (IV)	Procedure site - Direct (attribute)	True	Trochlear nerve structure	Inferred relationship	Some	1
Repair of trochlear nerve (IV)	Procedure site - Direct (attribute)	True	Trochlear nerve structure	Inferred relationship	Some	1
Excision of lesion of trochlear nerve (IV) (procedure)	Procedure site - Direct (attribute)	True	Trochlear nerve structure	Inferred relationship	Some	2
Structure of right trochlear nerve	Is a	True	Trochlear nerve structure	Inferred relationship	Some
Structure of left trochlear nerve	Is a	True	Trochlear nerve structure	Inferred relationship	Some
A rare, genetic, neuro-ophthalmological disease characterized by congenital fourth cranial nerve palsy, manifesting with hypertropia in side gaze, unexplained head tilt, acquired vertical diplopia, and progressive increase in vertical fusional vergence amplitudes with prolonged occlusion. Facial asymmetry (i.e. hemifacial retrusion, upward slanting of mouth on the side of the head tilt, mild enophthalmos of paretic eye) and superior oblique tendon abnormalities (such as absence, redundance, misdirection) are frequently associated. Some asymptomatic cases have been reported.	Finding site	True	Trochlear nerve structure	Inferred relationship	Some	1
Intact trochlear nerve	Finding site	True	Trochlear nerve structure	Inferred relationship	Some	1
A rare ophthalmic disorder with cranial nerve involvement characterized by dysfunction of the superior oblique muscle with typical eye motility patterns including elevation in adduction, V-pattern related to reduced abduction force in downgaze with unopposed adduction by the inferior rectus muscle, and excyclotorsion. Patients may present with contralateral head tilt to compensate for vertical binocular misalignment and diplopia.	Finding site	True	Trochlear nerve structure	Inferred relationship	Some	1
Acquired trochlear nerve palsy	Finding site	True	Trochlear nerve structure	Inferred relationship	Some	1
Acute trochlear nerve palsy (disorder)	Finding site	True	Trochlear nerve structure	Inferred relationship	Some	2
Chronic fourth nerve palsy (disorder)	Finding site	True	Trochlear nerve structure	Inferred relationship	Some	2
Chronic fourth nerve palsy with spread of comitance (disorder)	Finding site	True	Trochlear nerve structure	Inferred relationship	Some	2

Reference Sets

Lateralizable body structure reference set (foundation metadata concept)

Anatomy structure and entire association reference set (foundation metadata concept)

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Id	Description	Lang	Type	Status	Case?	Module
65933019	Trochlear nerve	en	Synonym (core metadata concept)	Active	Entire term case insensitive (core metadata concept)	SNOMED CT core
65935014	Fourth cranial nerve	en	Synonym (core metadata concept)	Active	Entire term case insensitive (core metadata concept)	SNOMED CT core
65936010	Superior oblique nerve	en	Synonym (core metadata concept)	Active	Entire term case insensitive (core metadata concept)	SNOMED CT core
492025015	Trochlear nerve structure	en	Synonym (core metadata concept)	Active	Entire term case insensitive (core metadata concept)	SNOMED CT core
775752012	Trochlear nerve structure (body structure)	en	Fully specified name	Active	Entire term case insensitive (core metadata concept)	SNOMED CT core
1229512018	Cranial nerve IV	en	Synonym (core metadata concept)	Active	Only initial character case insensitive (core metadata concept)	SNOMED CT core