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胆脂瘤是皮肤错位生长发育所形成。除发生于颞骨外,还可见于其他颅骨如鼻窦和颅内,也可出现于颈静脉窝、乳房和肾等,其中中耳的后天继发性胆脂瘤最为常见,而原发性胆脂瘤比较少见,先天性胆脂瘤则属罕见。后者是外胚层的胚胎细胞遗留于上述部位中发育而成,有不断增长的趋势,也可长期无症状,合并感染时才被发现。我科曾接诊一例幼儿患者,病变位于右侧乳突和鼓室,合并感染,做了改良乳突根治术。本例特点是:①无中耳炎史。②鼓膜完整。③外耳道骨性狭窄。④顶盖和筛区骨质破坏,后者有瘘管通外耳道口后壁。现报道如下。男,3岁,住院号184081,1984年5月21日以右侧外耳道肿物收入院。
Cholesteatoma is the formation of skin dislocation growth and development. In addition to occurring in the temporal bone, but also found in other skull, such as the sinuses and intracranial, but also in the jugular fossa, breast and kidney, including middle ear secondary cholesteatoma the most common, while the primary cholesteatum Tumors are relatively rare, congenital cholesteatoma is rare. The latter is the ectodermal embryonic cells left in the above parts of the development, there is a growing trend, but also long-term asymptomatic, was found when the infection. My department had admissions a case of young children, lesions located in the right mastoid and tympanic cavity, with infection, made a radical mastoidectomy. The characteristics of this case are: ① no history of otitis media. ② tympanic membrane integrity. ③ external auditory canal stenosis. ④ cover and sieve bone destruction, the latter fistula through the posterior wall of the ear canal. Report as follows now. Male, 3 years old, hospital number 184081, May 21, 1984 to the right side of the ear canal tumor hospital.