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Subarachnoid Cyst of Cerebellopontine Angle with Slight Disequilibrium and Hearing Disorders:Report of a Case Toshihisa Murofushi 1 1Department of Otolaryngology, JR Tokyo General Hospital pp.113-115
Published Date 1992/2/20
DOI https://doi.org/10.11477/mf.1411900496
  • Abstract
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A 59-year-old woman with a subarachnoid cyst of cerebellopontine angle fell down and hit her head. A few days later, she developed slight disequilibrium and a hearing impairment.

A pure-tone audiogram demonstrated normal thresholds, but ABR indicated left retrocochlear lesions. Caloric tests showcd a reduced vestibular response in the left ear. These findings suggested a lesion in the left cerebellopontine angle.

MRI showed a large mass of the left cerebel-lopontine angle, and the intensity was compatible with that of CSF. Neurosurgery revealed a subarachnoid cyst.


Copyright © 1992, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1316 印刷版ISSN 0914-3491 医学書院

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