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可将胆脂瘤分为先天性或后天性,但临床难以应用。Tos将其分为上鼓室型、边缘型及中央型,文章中建议增加一型,即完整鼓膜内型。通常认为儿童胆脂瘤侵袭性强于成人,呈膨胀性生长,且发展快。儿童患者乳突气化程度优于成人,保留外耳道的封闭性手术胆脂瘤残余发生率高于成人。作者根据胆脂瘤残存率、术后耳漏发生率、术前术后听力水平分析评价一组开放性手术的疗效。共54例57耳,年龄4～15岁,平均12岁。男34例,女20例。3例为首次行保留外耳道乳突切除术、鼓膜切除并成形术和鼓室切开并切除术而需再次行开放性乳突根治术,51例直接行开放性手术。术后只有3例(6%)因胆脂瘤残存而再次手术,70%病例无耳漏,气骨导
Cholesteatoma can be divided into congenital or acquired, but difficult to apply clinical. Tos will be divided into upper tympanic, marginal and central type, the article proposed to increase a type, that is, the complete tympanic membrane type. Cholesteatoma is generally considered aggressive in children than adults, was swollen growth, and the rapid development. Child patients with mastoid gasification degree is superior to adults, keep the external auditory canal occlusive surgery cholesteatoma residual rate higher than adults. The authors evaluate the efficacy of a group of open surgery based on the residual rate of cholesteatoma, the incidence of postoperative otorrhea, preoperative and postoperative hearing levels analysis. A total of 54 cases 57 ears, aged 4 to 15 years old, an average of 12 years old. 34 males and 20 females. For the first time in 3 cases, external mastoid resection, tympanotomy, tympanotomy and resection of tympanotomy were performed for the first time, and open mastoidectomy was required again. 51 cases underwent direct open surgery. Only 3 patients (6%) underwent surgery again due to the remaining of cholesteatoma, 70% of cases had no leakage of the ear,