title: Cystic schwannoma of the anterior tentorial hiatus. Case report and review of the literature.
abstract: Intracranial schwannomas not arising from the facial, trigeminal, or vestibular nerves in the absence of neurofibromatosis are extremely rare. We report a case of a schwannoma arising in the region of the anterior tentorial hiatus and posterior cavernous sinus. A 17-year old girl presented with headaches and intermittent diplopia. An MRI of the brain revealed a heterogeneously enhancing mass adjacent to the free edge of the tentorium, superior to the cerebellopontine angle. An orbitozygomatic pterional craniotomy was done with complete resection of the tumor. Postoperatively, the patient remained neurologically intact. The clinical presentation and treatment of schwannomas arising in this location are discussed.
authors.affiliation: Department of Neurosurgery, University of California at San Francisco, San Francisco, Calif 94143-0112, USA.
authors.forename: Rose
authors.initials: R
authors.lastname: Du
authors.forename: Jashdeep
authors.initials: J
authors.lastname: Dhoot
authors.forename: Michael W
authors.initials: MW
authors.lastname: McDermott
authors.forename: Nalin
authors.initials: N
authors.lastname: Gupta
mesh_terms: D000293:Adolescent; D002426:Cavernous Sinus / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D003390:Cranial Nerve Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D009442:Neurilemmoma / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D014057:Tomography, X-Ray Computed; D014321:Trochlear Nerve / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D020432:Trochlear Nerve Diseases / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery