“Z”成形术；后天性前鼻孔狭窄；手术治疗。

"Z"-plasty; acquired stenosis of anterior naris; treatment.

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随其发育，仔鱼前鼻孔隆起于外表面，发育为管状延伸物而与外界相通。

With the development of the fish, the anterior naris of the fry rose above the external surface and developed into a tubular extension, which opened to the outside.

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目的：采用前鼻孔放置棉球的方法减少鼻腔通气，观察鼻内镜术后创面愈合的情况。

Objective: to study the effects of reducing nasal airflow by placing a cotton ball in the anterior nostrils on wound healing after endoscopic sinus surgery.

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