title: Intrasellar schwannoma mimicking pituitary adenoma: a case report.
abstract: Intrasellar location of schwannoma is extremely rare, although intracranial schwannomas account for up to 8% of all primary brain tumors. An unusual case of an intrasellar schwannoma radiographically and clinically simulating a pituitary adenoma is reported. A 39-yr-old man presented a 10-month history of visual disturbance and decreased libido. Neurological examination showed poor visual acuity of both eyes with bitemporal hemianopsia. Computed tomography and magnetic resonance imaging showed a sellar tumor with suprasellar extension. Pituitary adenoma was considered as a preoperative diagnosis. The tumor was removed through a trans-sphenoidal approach. Microscopic examination of the tumor revealed schwannoma.
authors.affiliation: Department of Neurosurgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, 50 Ilwon-dong, Kangnam-gu, Seoul 135-710, Korea.
authors.forename: Sung Mock
authors.initials: SM
authors.lastname: Whee
authors.forename: Jung Il
authors.initials: JI
authors.lastname: Lee
authors.forename: Jong Hyun
authors.initials: JH
authors.lastname: Kim
mesh_terms: D000328:Adult; D001932:Brain Neoplasms / Q000175:diagnosis / Q000378:metabolism / Q000473:pathology* / Q000601:surgery; D003937:Diagnosis, Differential; D005500:Follow-Up Studies; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D009442:Neurilemmoma / Q000175:diagnosis / Q000378:metabolism / Q000473:pathology* / Q000601:surgery; D010911:Pituitary Neoplasms; D015175:Prolactinoma; D014057:Tomography, X-Ray Computed; D014794:Visual Fields