目的探讨蝶窦后鼻孔息肉的临床特征、诊断和鼻内镜手术治疗效果。
Objective To investigate the clinical features, diagnosis, and endoscopic surgical effect of sphenochoanal polyp.
结论：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。
Conclusion: 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.
结果上颌窦和蝶窦的放射反应可分为片状型、月牙型、环型和息肉型。
Results The radioreactions in maxillary sinus and sphenoidal sinus might be classified as patch form, crescent form, ring form and polyform.
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