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Positional Nystagmus of Malignant Paroxysmal Type Ryuichi Osanai 1 1Division of Neurotology, Tokyo Metropolitan Neurological Hospital pp.387-393
Published Date 1988/5/20
DOI https://doi.org/10.11477/mf.1411200153
  • Abstract
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Three cases of positional nystagmus of malignant paroxysmal type (Sakata) were reported.

All three patients complained of vertigo which was induced by change of head position and exhibited direction changing positional nystagmus whose quick phase was toward the uppermost ear. Astrocytoma of cerebellar vermis, hematoma of deeper portion of cerebellar hemisphere and vermis, and abscess of cerebellar hemisphere and vermis were disclosed in each case by CT scan and sur-gical intervention.

Neurotological findings including positional and positioning nystagmus, saccadic pattern in eye tracking test and impaired optokinetic nystagmus were of great value to clarify the disturbance of central vestibular system.


Copyright © 1988, 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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