title: Orbital extension of trigeminal schwannoma.
abstract: Schwannomas, also known as neurilemmomas, are benign peripheral nerve sheath tumors. Trigeminal schwannomas are rare intracranial tumors. Here, we report a 35-year-old female presenting with an axial proptosis of right eyeball with right-sided III, IV and VI cranial nerve palsy. Her best corrected visual acuity in the right eye was perception of light absent and in the left eye was 20/20. MRI scan revealed a large right-sided heterogeneous, extra-axial middle cranial fossa mass that extended to the intraconal space of right orbit. A diagnosis of intracranial trigeminal nerve schwannoma with right orbital extension was made. Successful surgical excision of the mass with preservation of the surrounding tissues and orbital exenteration was done. Post-operative period was uneventful.
authors.affiliation: Department of Neurosurgery, Calcutta National Medical College, Kolkata, India.
authors.forename: Shantanu
authors.initials: S
authors.lastname: Ghosh
authors.affiliation: Department of Ophthalmology, Midnapore Medical College, West Bengal, India.
authors.forename: Debabrata
authors.initials: D
authors.lastname: Das
authors.affiliation: Department of Neurosurgery, Calcutta National Medical College, Kolkata, India.
authors.forename: Rahul
authors.initials: R
authors.lastname: Varshney
authors.affiliation: Department of Pathology, Calcutta National Medical College, Kolkata, India.
authors.forename: Sumit
authors.initials: S
authors.lastname: Nandy
keywords: Extracranial extension; orbit; trigeminal schwannoma