CONCLUSION The pathological findings and clinical features of the antrochoanal polyps indicate that antrochoanal polyps has a different pathogenesis compared with the usual nasal polyps.

• 结论上颌窦源性后鼻孔息肉特殊的病理特征及临床表现说明其发病机制可能存在特殊性，临床治疗也应区别对待。