title: Communicating hydrocephalus after gamma knife radiosurgery for vestibular schwannoma: an MR imaging study.
abstract: Vestibular schwannomas are common, and gamma knife radiosurgery is a treatment option of symptomatic tumors. Hydrocephalus may be a complication of gamma knife treatment of vestibular schwannoma, though the cause-and-effect relationship can be debated because tumors can cause hydrocephalus without treatment. We present an MR imaging study of an unusual case of communicating hydrocephalus after gamma knife radiosurgery of a vestibular schwannoma in which the timeline of events strongly suggests that gamma knife played a contributory role in the development of hydrocephalus. We discuss risk factors for the development of hydrocephalus after radiation therapy and the role of MR CSF cine-flow study in the evaluation of treatment options for hydrocephalus in this setting.
authors.affiliation: Department of Radiology, University of Vermont College of Medicine, Burlington, VT, USA. keithcauley@hotmail.com
authors.forename: K A
authors.initials: KA
authors.lastname: Cauley
authors.forename: B
authors.initials: B
authors.lastname: Ratkovits
authors.forename: S P
authors.initials: SP
authors.lastname: Braff
authors.forename: G
authors.initials: G
authors.lastname: Linnell
mesh_terms: D005260:Female; D006801:Humans; D006849:Hydrocephalus / Q000209:etiology* / Q000473:pathology*; D008279:Magnetic Resonance Imaging / Q000379:methods*; D009464:Neuroma, Acoustic / Q000150:complications / Q000473:pathology* / Q000601:surgery*; D016634:Radiosurgery / Q000009:adverse effects*; D055815:Young Adult