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我院1991年以来共施行开放式乳突根治术治疗胆脂瘤型中耳炎104例，其中20例同时行一期鼓室成形术，现报告如下。材料和方法一般资料：本组共20例20耳，男9例，女11例，年龄12～58岁。均（l）临床确诊为胆脂瘤型中耳炎；（2）传导性耳聋或混合性聋．听力气骨导差距M60dB；（3）
Since 1991, a total of 104 cases of cholesteatoma otitis media have been treated with open mastoidectomy in our hospital. Among them, 20 cases underwent tympanoplasty at the same time. The report is as follows. Materials and Methods General Information: The group of 20 cases of 20 ears, 9 males and 11 females, aged 12 to 58 years. (L) clinically diagnosed as cholesteatoma otitis media; (2) conductive deafness or mixed deafness. Listening strength of air conduction gap M60dB; (3)