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HISTOLOGICAL STUDY OF OTOSCLEROSIS AMONG THE JAPANESE Tomoyuki Hoshino 1 pp.547-552
Published Date 1976/8/20
DOI https://doi.org/10.11477/mf.1492208380
  • Abstract
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 Histological evidence of otosclerosis foci was found in 4 ears, 3 individuals, out of 76 ears, 46 individuals of the Japanese temporal bone specimens studied. Bony changes were found in the left oval window area of a 64 year-old male ; in the left round window margin and the anterior wall of the internal auditory canal of a 52 year-old male ; and, in the anterior part of the right cochlea and bilateral semicircular canal regions of a 21 year-old male.

 Neither diffuse nor vast invasive foci, such as frequently reported among the Caucasian temporal bones, were found in these three cases. Other reports on the Japanese temporal bone otosclerosis showed a similar restricted foci.

 The authors conclude that this restricted focus development may be the underlying factor of the low incidence of clinically manifested otosclerosis among the Japanese in general.


Copyright © 1976, 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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