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Epidermoid Cyst Arising from the Fourth Ventricle with Special Reference to Bruns Nystagmus:Report of a Case Hajime Nakagawa 1 1Department of Otorhinolaryngology, Toyama Medical and Pharmaceutical University, Faculty of Medicine pp.59-65
Published Date 1991/1/20
DOI https://doi.org/10.11477/mf.1411900230
  • Abstract
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A 54-year-old female patient with a complaint of positional vertigo along with headache, who showed several neurotological findings including Bruns type gaze nystagmus, alternating positional nystagmus, suppressed OKN with DP to the left, failure of fixation suppression (FFS), and discre-pancy between the direction of spontaneous nystagmus and OKN-DP. These findings suggested a right CP angle and cerebellar lesion.

MRI detected the lesion more clearly than in x-ray CT. From our data-base system of neuro-tological clinic, the significance of delectability of these findings was discussed. The conclusions were summerized as follows; Although the number of the cases with acoustic neurinoma showing Bruns type nystagmus has been decreased so far in advance both with neurophysiological test (ABR, GBST) and with image analysis, with ABR and galvanic body sway test (GBST), it is still of a great importance to detect the other cere- bellopontine angle lesions.


Copyright © 1991, 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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