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Correlation between CT and Tympanogram in Secretory Otitis Media Toshimitsu Kobayashi 1 1Department of Otolaryngology Iwaki-Kyoritsu General Hospital pp.921-929
Published Date 1984/11/20
DOI https://doi.org/10.11477/mf.1492209868
  • Abstract
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 In an attempt to evaluate the feasibility of the tympanometry in detecting the middle ear effusion (MEE) in secretory otitis media (SOM) in childhood, the findings of the computed tomography (CT) were evaluated whether they were compatible with that of tympanometry in 27 cases (51 ears) of SOM.

 Tympanometry (tympanogram, static compliance measurement and stapedial reflex test), pure tone audiometry and high resolution CT were performed sequentially, and the CT findings were compared with the results of the other tests.

 The conclusions obtained were summarized as follows.

 1. Among the tests performed, tympanogram appeared to be the most reliable measure in detection of MEE.

 2. Fifteen ears out of 16 with type B tympanograms and 6 ears out of 15 with type C2 tympanograms, were diagnosed by CT as having MEE. MEE occupied the entire middile ear space in most ears with type B tympanograms. By contrast, in the ears with type C2 tympanograms, air containing space of varying size were always observed even in the ears with MEE.


Copyright © 1984, 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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