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。
