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Yutaka Yoshimoto 1 1Department of Otorhinolaryngology, Teikyo University School of Medicine pp.921-927
Published Date 1986/11/20
DOI https://doi.org/10.11477/mf.1492210216

 A case of acoustic tumor showing a normal reaction to the caloric nystagmus test is described.

 On examination of acoustic tumor patients presenting with spontaneous nystagmus, it is necessary to distinguish the true caloric nystagmus from the enhanced spontaneous nystagmus. This distinction can be made by determining whether or not the direction of caloric nystagmus is reversed when the patient changes his head position from the ordinary position to the slouching position in sitting. In the case under discussion it was confirmed by this technique that the direction of caloric nystagmus was reversed.

 This case was found to have a cystic acoustic tumor originating in the inferior vestibular nerve.


Copyright © 1986, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 印刷版ISSN 0386-9679 医学書院

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