目的：探讨治疗先天性后鼻孔闭锁的手术方法。
Objective: To study the method of treating congenital choanal atresia.
目的探讨鼻咽癌放疗后至后放射性后鼻孔闭锁的治疗。
Objective TO evaluate the clinical effect of treatment of choanal atresia after radiotherapy in the patients with nasopharyngeal carcinoma by transnasal endoscopic surgery.
方法：回顾分析19例行鼻内窥镜下放射性后鼻孔闭锁成形术的临床资料。
Method: The clinical data of 19 patients with radio-atresia of choanae treated by transnasal endoscopic surgical plastic procedure were analyzed retrospectively.
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