Study on Hearing Disturbance in Cholesteatoma Otitis.

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  • 真珠腫性中耳炎の聴力障害

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Abstract

Pure tone audiograms of eighty-one ears withcholesteatoma otitis operated in our departmentfrom 1984 to 1993 were studied, and comparedwith those of thirty-six ears with otitis mediachronica (the cases without cholesteatoma).<BR>Bone conduction threshold of the opposite earin these all cases is within normal range at theaudiometory before operation.<BR>As a result, bone conduction threshold and air-bone gap of the cases with cholesteatoma otitisshowed a tendency to increase, as being prolongedof their courses and compared with thoseof the ears of otitis media chronica.<BR>Flat type audiograms were shown more frequentlyin the cases with cholesteatoma otitis, onthe other hand the low tone type was shown morefrequently in the cases with otitis media chronica.<BR>The cases with increasing bone conductionthreshold were shown more frequently in thecases with cholesteatoma of tympanic cavity andin the cases with their course more than tenyears.

Journal

  • JIBI INKOKA TEMBO

    JIBI INKOKA TEMBO 38 (5), 613-620, 1995

    Society of Oto-rhino-laryngology Tokyo

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