Otology Japan
Online ISSN : 1884-1457
Print ISSN : 0917-2025
ISSN-L : 0917-2025
鼓室形成術I型手術後の耳小骨病変2例
平杉 嘉平太任 書晃中江 進
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2003 年 13 巻 5 号 p. 637-642

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Two cases of ossicular disruption after tympaoplasty Type I were surgically treated in our department. These two cases also showed continuous conductive hearing loss after tympanoplasty Type I Exploratory tympanotomy was carried out in these two cases.
In the first case, a 58-year-old male, (tympanoplasty Type I 12 years ago), sclerotic lesions existed in the M-I joint and I-S joint. We performed SFS (small fenestrate stapedotomy) and mobilization of the long process of the incus.
In the second case, a 28-year-old male (tympanoplasty Type I 4 years ago), postoperative epithelial remnant was found behind the eardrum and the long process of the incus was destroyed by a soft fibrous tissue. Almost good hearing was obtained after tympanoplasty Type III-i (apaceram-P).
It is difficult to confirm the existence of lesion by the conventional hearing and imaging tests, therefore the long-term follow-up of the postoperative course is necessary. The preoperative approaches to this disease are described in our cases and the relevant literatures.

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