Method: The clinical data of 19 patients with radio-atresia of choanae treated by transnasal endoscopic surgical plastic procedure were analyzed retrospectively.
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.
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。
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