title: Fourth ventricular meningioma in an adult--case report.
abstract: A 72-year-old female presented with an intra-fourth ventricular meningioma manifesting as truncal ataxia. Computed tomography (CT) showed a slightly high-density, well-demarcated, and homogeneously enhanced mass located in the fourth ventricle and extending to the right lateral recess. T2-weighted magnetic resonance (MR) imaging revealed a peritumoral high-intensity band without dural tail sign. Bilateral vertebral angiography revealed faint tumor staining supplied from the choroidal branches of the posterior inferior cerebellar arteries. The mass was totally resected via a suboccipital approach. CT, T2-weighted MR imaging, and vertebral angiography are informative for the preoperative diagnosis of fourth ventricular meningioma.
authors.affiliation: Department of Neurosurgery, Tokyo Medical University, Tokyo.
authors.forename: J
authors.initials: J
authors.lastname: Akimoto
authors.forename: Y
authors.initials: Y
authors.lastname: Sato
authors.forename: M
authors.initials: M
authors.lastname: Tsutsumi
authors.forename: J
authors.initials: J
authors.lastname: Haraoka
mesh_terms: D000368:Aged; D002551:Cerebral Ventricle Neoplasms / Q000175:diagnosis / Q000473:pathology / Q000601:surgery*; D005260:Female; D020546:Fourth Ventricle / Q000473:pathology / Q000601:surgery*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008577:Meningeal Neoplasms / Q000175:diagnosis / Q000473:pathology / Q000601:surgery*; D008579:Meningioma / Q000175:diagnosis / Q000473:pathology / Q000601:surgery*; D011183:Postoperative Complications / Q000175:diagnosis; D014057:Tomography, X-Ray Computed