the acquired cholesteatoma might come from drum invagination, epithelial invasion, basal cell hyperplasia and sqamous metaplasia theories.
英
美
- 后天性胆脂瘤致病机转包括鼓膜凹陷袋形成理论、上皮入侵理论、基底细胞增生理论及扁平上皮化生理论。