Staged surgery performed for cholesteatoma caters to the tendency of postoperative recidivism of this pathology and for the purpose of achieving better hearing result 摘要针对胆脂瘤术后容易复发或残存的特性以及改善听力的目的，我们对胆脂瘤性慢性中耳炎216耳中的105耳（ 48 . 6 % ） ，施行阶段性手术。
It is found at staged operation that residual cholesteatoma is more frequently encountered at some anatomic sites such as the anterior epitympanum , oval window niche , and hypotympanum near the eustachian tube 由阶段手术得到的经验显示上鼓室之前侧、卵圆窗及下鼓室靠近耳咽管处是胆脂瘤容易残留的部位。
As for recurrence , the avoidance of a too - large postoperative tympanomastoid space , the establishment of a patent epi - mesotympanic route , and the preservation of adequate middle ear mucosa should be emphasized 而避免术后中耳乳突腔过大，使上、中鼓室交通良好，以及尽量保持完整的中耳黏膜层，则是防止鼓膜再凹陷，再度形成胆脂瘤的良方。
Conclusion : the ear endoscope has the virtues of small trauma , fine resolving power and multiangle of view ; it can remove the focus thoroughly and reserve the normal structure as far as possible and debase the relapse rate , so it is a good tool to treat the cholesteatoma otitis media 结论：耳内窥镜具有创伤小、分辨率高和多视角的优点，能够彻底清除病灶，尽量保存正常结构，降低复发率，是治疗胆脂瘤型中耳炎的良好方法。
Other than paying attension to these areas during the operation , the author believes there are several points for the effective removal of cholesteatoma : 1 ) use of open or open - closed method for mastoidectomy ; 2 ) incision made over some safe site on the cholestratoma sac to remove its content beforehand , which will fascilitate the elevation of matrix after wards : 3 ) exposure of the fallopian canal in the tympanic cavity before lowering down the facial ridge ; 4 ) care be taken of pediatric cholesteatoma ; 5 ) good control of blood pressure and bleeding during the operation ; and 6 ) illumination 除了特别的注意这些部位外，开放腔或开放后再封闭的手术法，由外而内的将外耳道先行扩大以充分露出术野，大型胆脂瘤囊袋内容物先取出再予剥离，讲求颜面神经嵴削低的技巧，以及对小儿例的警戒心，术中出血的控制和照明的良好等，均为防止胆脂瘤残留的要诀。
