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A Case of the Inner Ear Anomaly with the Choroidal Coloboma Presenting the Mixed Hearing Impairment Seiichi Yoshimoto 1 1Department of Otorhinolaryngology, School of Medicine, Tokyo University pp.345-349
Published Date 1993/5/20
DOI https://doi.org/10.11477/mf.1411900713
  • Abstract
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An 8-year-old boy with severe hearing loss and dysequilibrium was reported. Pure toneaudio-metry revealed a mixed type of hearing impair-ment, in spite of no finding of otitis media with effusion. He had no response to thermal stimu-lation in either ear, but he showed rotatory nystagmus. CT scan revealed aplasia of the semicircular canals in both sides. Furthermore, ophthalmological examinations showed choroidal coloboma. This case suggested us that we should take disturbance of sound conduction into con-sideration even in patients with anomalies of the inner car.


Copyright © 1993, 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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