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.
实验组小鼠出生后立即在显微镜下用9 - 0线缝合左侧前鼻孔，造成左侧前鼻孔闭锁。
Experimental mice immediately after birth with a 9-0 suture under the microscope before the left nostril, causing the left front nostril atresia.
本文报告后鼻孔闭锁8例，并对其形成原因，症状及检查，手术方法，扩张器的选择和扩张时间，进行了简短讨论。
In this paper 8 cases of closure of rear nostril were reported. Its cause of formation, symptoms, examination and operative method, the choose of dilators and the dilating time were discussed briefly.
目的：探讨治疗先天性后鼻孔膜性闭锁的新方法。
Objective: To study a new method for the treatment of congenital membranous choanal atresia.
方法：鼻内镜下应用等离子刀治疗3例先天性后鼻孔膜性闭锁的患者。
Method: Three patients with congenital membranous choanal atresia were treated with plasma surgery system (PSS) under nasal endoscopy.
方法：鼻内镜下应用等离子刀治疗3例先天性后鼻孔膜性闭锁的患者。
Method: Three patients with congenital membranous choanal atresia were treated with plasma surgery system (PSS) under nasal endoscopy.
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