title: [Case of hydrocephalus associated with vestibular schwannoma, treated by tumor removal].
abstract: A 57-year-old male presented with gait disturbance, urinary incontinence, dementia resembling symptom of normal pressure hydrocephalus (NPH) and was admitted to our institusion. A computerized tomographic scan (CT) and magnetic resonance imaging (MRI) revealed hydrocephalus as well as a tumor in the right cerebellopontine angle. We diagnosed communicating-type hydrocephalus associated with the vestibular schwannoma and tumor removal was performed prior to ventriculo-peritoneal (V-P) shunt. After surgery, symptoms of the patient disappeared promptly and cerebrospinal fluid protein elevation was normalized. One month after surgery, CT and MRI revealed reduction of the ventricle size and V-P shunt became unnecessary. Hydrocephalus is occasionally complicated by vestibular schwannoma. The majority results from obstruction of the cerebrospinal fluid (CSF) pathway by large tumors. But, small tumors also cause communicating-type hydrocephalus. Although the selection of the treatment is controversial, tumor removal without a shunt is considered as a good strategy for management of hydrocephalus associated with vestibular schwannoma.
authors.affiliation: Department of Neurosurgery, Fuji Brain Institute and Hospital, 270-12 Sugita, Fujinomiya-shi, Shizuoka 418-0021, Japan.
authors.forename: Seisaku
authors.initials: S
authors.lastname: Kanayama
authors.forename: Michihiro
authors.initials: M
authors.lastname: Kohno
authors.forename: Kohichi
authors.initials: K
authors.lastname: Okamura
authors.forename: Masanori
authors.initials: M
authors.lastname: Yoshino
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Segawa
authors.forename: Isamu
authors.initials: I
authors.lastname: Saito
authors.forename: Keiji
authors.initials: K
authors.lastname: Sano
mesh_terms: D006801:Humans; D006849:Hydrocephalus / Q000175:diagnosis / Q000209:etiology*; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009464:Neuroma, Acoustic / Q000150:complications* / Q000175:diagnosis / Q000601:surgery*; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome