目的 :总结乳突尖部分切除在开放式鼓室成形术或乳突根治术中的作用。方法 :4 4例胆脂瘤型中耳炎患者中 ,行单纯乳突根治术 (10例 )和开放式鼓室成形术 (34例 ,含乳突切除术加鼓室成形术Ⅱ型或Ⅲ型 )时 ,同时切除部分乳突尖外侧壁。结果 :切除乳突尖后 ,乳突容积明显减小 ,术后 3个月随访 ,干耳 4 3例 ,占 97.6 %。干耳时间 3周～ 2 .5个月。术后 1年随访 ,无一例胆脂瘤复发。结论 :乳突尖部分切除在开放式鼓室成形术或乳突根治术中消灭乳突死腔 ,最大程度达到干耳 ,减少胆脂瘤复发 ,具有重要作用 Objective: To summarize the role of partial removal of mastoid in open tympanoplasty or mastoidectomy. Methods: Forty four cases of cholesteatoma otitis media were treated with radical mastoidectomy (10 cases) and open tympanoplasty (34 cases with mastoidctomy plus tympanoplasty type Ⅱ or Ⅲ) At the same time remove some of the outer edge of the mastoid tip. Results: After removal of the mastoid tip, the volume of the mastoid was significantly reduced. After 3 months of follow-up, 43 cases of dry ears accounted for 97.6%. Dry ear time of 3 weeks ~ 2.5 months. One year follow-up, no case of cholesteatoma recurrence. Conclusion: Partial removal of the mastoidus plays an important role in the elimination of dead papilla in open tympanoplasty or radical mastectomy, maximizing the incidence of dry ears and reducing the recurrence of cholesteatoma