The choanal polyp may originate in the maxillary sinus, sphenoidal sinus, middle nasal concha, nasal septum and other parts, FESS is the first choice in treating it.

• :后鼻孔息肉可源发于上颌窦、蝶窦、中鼻甲及鼻中隔等多部位 ,鼻内镜手术可列为治疗后鼻孔息肉的首选方法。