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External Auditory Canal Cholesteatoma Tomoyuki Hoshine 1 1Department of Otolaryngology, Hamamatsu University School of Medicine pp.7-12
Published Date 1987/1/20
DOI https://doi.org/10.11477/mf.1492210242
  • Abstract
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 Twenty-five cases of external auditory canal cholesteatomas were analysed. This disease was found predominantly in elderly females with mostly unilateral affection. Plain X-ray films showed normal development of the air cell system in 15 of 19 cases, and conductive hearing losses were found in only 2 of 21 examined cases. CT films clearly showed destructive changes in the bony canal wall. In acute exacerbation, diffuse shadow was seen all through the middle ear cavity but cleared up after conservative therapy. A localized epidermal cell lesion found in the outer ear canal of a 28-year-old female was discussed in relation to a probable cause of this disease.


Copyright © 1987, 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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