XXXX of the mandibular division of the trigeminal nerve.

@entity1 @entity455 @entity16 @entity158 @entity1211 @entity9
OBJECTIVES: To present a rare cause of @entity158 , and the differential diagnosis of a lesion of the mandibular division of the trigeminal nerve. CASE REPORT: A 19-year-old @entity1 presented to a tertiary referral skull base centre with right periorbital @entity158 and a progressive, right-sided deficit of the mandibular division of the trigeminal nerve. Clinical examination revealed right-sided hypoaesthesia in the mandibular division of the trigeminal nerve dermatome, mild trismus and some wasting of the right masseter muscle. Computed tomography and magnetic resonance imaging scans revealed a small area of mildly enhancing soft tissue centred within the foramen ovale, with concentric enlargement. Surgery was undertaken via an infratemporal fossa (Fisch) type D approach. @entity455 was found filling the foramen ovale, with no obvious nerve separate from the lesion. The lesion was removed en bloc. Histopathological analysis demonstrated a @entity1211 within the nerve. CONCLUSION: @entity158 is common, and may be wrongly attributed to trigeminal @entity9 . A thorough clinical examination must be performed to identify subtle @entity16 , and appropriate imaging undertaken to exclude rare causes, such as this @entity1211 of the mandibular division of the trigeminal nerve.
