本院1990年7月～1997年9月按照M．Portmann法对乳突根治术行耳后切口耳道、耳甲耳道成形，获得满意效果，现报告如下。临床资料一、一般资料本组对例（58耳），随访1～7年，男41例，女16例；年龄6～58岁。胆脂瘤型中耳炎54例（5耳）骨疡型中耳炎3例。其中耳源性并发症15例，先 Our hospital from July 1990 to September 1997 according to M. Portmann method of radical mastoidectomy after ear incision ear canal, ear canal ear canal shaping, obtained satisfactory results, are as follows. Clinical data First, the general information The group of cases (58 ears), followed up for 1 to 7 years, 41 males and 16 females; aged 6 to 58 years. Cholesteatoma otitis media in 54 cases (5 ears), 3 cases of type otitis media. One of the 15 cases of otogenic complications, first