Choanal atresia is often related to the presence of a congenital abnormality and only a few cases involve the occurrence of mucosal fibrosis of the surrounding choana after trauma.
摘要后鼻孔闭锁大多数与先天性发育畸
有关，少部分因放射
致后鼻孔周围黏
组织伤害引起纤
成。
Choanal atresia is often related to the presence of a congenital abnormality and only a few cases involve the occurrence of mucosal fibrosis of the surrounding choana after trauma.
摘要后鼻孔闭锁大多数与先天性发育畸有关，少部分因放射致后鼻孔周围黏组织伤害引起纤成。
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