Pfaltz C R, Redli M
ORL J Otorhinolaryngol Relat Spec. 1978;40(1):23-31. doi: 10.1159/000275383.
A clinico-pathological study of 10 cases (including histopathology) indicates that occult cholesteatoma is neither a congenital cholesteatoma nor an epidermoid cyst, originating in the attic through a melaplastic process of middle ear mucosa behind an intact tympanic membrane. Occult cholesteatoma is due to retraction and active immigration of the epidermal layer of the tympanic membrane into the narrow compartments of the epitympanic area and its causative factor is a chronic inflammatory stimulus. Symptomatology is insiduous because extension of destruction depends entirely on the direction of its growth which for its part is guided by the mucosal folds of the epitympanic space.
一项包括组织病理学在内的10例临床病理研究表明，隐匿性胆脂瘤既不是先天性胆脂瘤也不是表皮样囊肿，它起源于上鼓室，是通过完整鼓膜后方中耳黏膜的化生过程形成的。隐匿性胆脂瘤是由于鼓膜表皮层回缩并活跃地移入上鼓室区域的狭窄间隙，其致病因素是慢性炎症刺激。症状隐匿，因为破坏的扩展完全取决于其生长方向，而生长方向又受上鼓室空间黏膜皱襞的引导。
