<症例>鼓膜異常を伴わないアブミ骨周囲に限局した真珠腫の1例

概要

論文の詳細を見る
Even if a small intratympanic cholesteatoma is circumscribed in the stapes region, abnormal findings of an ear drum may be observed in most cases. In cases with no abnormalities of an ear drum and nothing abnormal behind the tympanic membrane, the diagnosis of attic cholesteatoma is rather difficult without surgical exploration. This case, 16 year-old boy, showed neither abnormalities of the tympanic membrane nor cholesteatoma behind the ear drum. Ossicular malformation and/or fixation of the stapes footplate was suspected by the audiological examination. When unilateral malformation of the ossicular chains and/or otosclerosis is diagnosed, urgent surgery is not necessary. However, a small invisible cholesteatoma with an intact tympanic membrane may extend to destruct the ossicular chains and surrounding tissues if surgical management is postponed. A small cholesteatoma with an intact ear drum should be included in the differential diagnosis of ossicular dysfunction.
近畿大学の論文
1985-06-25