Kondratchikov D S, Diab Kh M, Korvyakov V S, Terekhina L I
Research and Clinical Centre of Otorhinolaryngology, Federal Medico-Biological Agency, Moscow, Russia, 123182.
Vestn Otorinolaringol. 2017;82(3):69-74. doi: 10.17116/otorino201782369-74.
Acquired atresia of the external acoustic meatus is a rare pathological condition characterized by obliteration of the medial part of the external acoustic canal by a soft fibrous plug. The present article presents an overview of a series of cases of acquired atresia and stenosis of the external acoustic meatus with the description of etiology, pathogenesis, and methods for the treatment of this condition. In the majority of the cases, atresia develops at the final stage of granulation external otitis with or without an accompanying dermatological pathology. Another common cause of the acquired atresia of the external acoustic meatus is the fracture of the temporal bone as well as extensive ear surgery, radiation therapy and a neoplasm in the auditory passage. The surgical strategy for the management of the acquired atresia and stenosis of the external acoustic meatus consists, besides the excision of the fibrous plug, of the application of the cutaneous flaps and/or transplants to cover the bare parts of the bone portion of the affected external canal. In spite of such treatment, the state of the external acoustic canal remains unstable, and a relapse of its atresia and stenosis can not be wholly excluded.
后天性外耳道闭锁是一种罕见的病理状况，其特征为外耳道内侧部分被柔软的纤维栓阻塞。本文概述了一系列后天性外耳道闭锁和狭窄病例，描述了其病因、发病机制及治疗方法。在大多数病例中，闭锁发生在肉芽性外耳道炎的末期，伴或不伴有皮肤病理学改变。后天性外耳道闭锁的另一个常见原因是颞骨骨折以及广泛的耳部手术、放射治疗和耳道肿瘤。后天性外耳道闭锁和狭窄的手术治疗策略，除了切除纤维栓外，还包括应用皮瓣和/或移植组织覆盖患侧外耳道骨部的裸露部分。尽管采取了这种治疗方法，外耳道的状况仍然不稳定，其闭锁和狭窄复发仍不能完全排除。
