Becker B C, Tos M
Department of Otorhinolaryngology, Gentofte Hospital, University of Copenhagen, Denmark.
Laryngoscope. 1998 Jun;108(6):903-7. doi: 10.1097/00005537-199806000-00021.
Postinflammatory, acquired atresia of the external auditory meatus is a relatively rare consequence of chronic otitis media or recurrent external otitis with an annual incidence of 0.6 cases per 100,000 inhabitants. Primary and late results after operative treatment of this condition in 53 ears over 27 years are presented. Perioperative findings are described, and an outline of applied surgical technique is given. Six patients had bilateral involvement. The male-to-female ratio was 1:2, median age at surgery was 46 years, and the median follow-up period was 5 years (range, 4 mo to 13 y). In 11% of the cases, recurrent atresia developed. Early operation is recommended, because cholesteatoma behind the atresia was found in 9%. Hearing improvement has been considerable after removal of the atresia with primary closure of airbone gap within 20 dB in 90% of the cases.
炎症后获得性外耳道闭锁是慢性中耳炎或复发性外耳道炎相对罕见的后果，年发病率为每10万居民0.6例。本文介绍了27年间53耳该疾病手术治疗的初次和晚期结果。描述了围手术期的发现，并给出了应用手术技术的概述。6例患者为双侧受累。男女比例为1:2，手术时的中位年龄为46岁，中位随访期为5年（范围4个月至13年）。11%的病例出现复发性闭锁。建议早期手术，因为9%的病例在闭锁后方发现胆脂瘤。在90%的病例中，切除闭锁并一期封闭气骨导间距20dB以内后，听力有显著改善。
