鼻腔及鼻窦内翻性乳头状瘤(下称IP)较少见,原发于上颌窦者更为少见。我院自1982年～1989年共收治原发性上颌窦IP4例,报告如下。临床资料1.性别与年龄:4例均为男性,年龄分别为37岁、40岁、54岁、78岁。 Nasal and sinus inverted papilloma (hereinafter referred to as IP) is rare, the primary in the maxillary sinus are more rare. Our hospital since 1982 ~ 1989 were treated primary sinus IP4 cases, the report is as follows. Clinical data 1 gender and age: 4 cases were male, the age was 37 years old, 40 years old, 54 years old, 78 years old.