鼻内翻性乳头状瘤鼻内翻性乳头状瘤Nasal Inverted Papilloma背景 IP is a benign epithelial growth in the underlying stroma of the nasal cavity and paranasal sinuses that is best known for its invasiveness,tendency to recur,and association with malignancy.内翻性乳头状瘤是一种生长在鼻腔鼻窦内间质组织下方的良性肿瘤,它具有侵袭性、复发倾向,并有恶变性。内翻性乳头状瘤鼻腔鼻窦良性肿瘤术后易复发,复发率5%47%不等,多次手术及年龄较大者易产生恶性变,恶变率为7%。应属真正的上皮组织边缘性肿瘤,或交界性肿瘤。病因u发病原因至今不清。u有研究在肿瘤中检出人乳头状瘤病毒(human papilloma virus,HPV),但尚不能证明与HPV相关。u也有研究表明IP与EB病毒感染有关病理:大体 Pathologically,this tumor is distinct.Grossly,i