鼻内翻性乳头状瘤是鼻腔、鼻窦最常见的良性肿瘤之一。属上皮源性良性肿瘤。但其特殊的生物学特性使其具有一般良性肿瘤不同的鲜明特点。它具有破坏性生长方式、高复发性,极易恶变,有5%-15%的恶变率。发病率约占鼻腔和鼻窦肿瘤的0、4%~4、7%[1]。随着鼻内窥镜技术的发展,以往一 Nasal inverted papilloma is one of the most common benign tumors of the nose and sinuses. An epithelial-derived benign tumor. However, its special biological characteristics make it have distinct characteristics of the general benign tumor. It has a destructive growth pattern, high recurrence, extremely malignant, with 5% -15% of the rate of malignancy. The incidence of nasal and sinus tumors account for about 0,4% to 4,7% [1]. With the development of nasal endoscopy technology, the past one