鼻腔鼻窦乳头状瘤是鼻腔鼻窦内最常见的良性肿瘤之一。多发于中老年人,男性较多见。其为上皮细胞高度增生形成。病理上分外生型和内翻型,后者常见,其特点为增生的上皮团块(肿瘤组织)向基质内内翻,基底膜水肿,呈息肉样肿块,好发于中鼻道的外侧壁;并沿着鼻道、窦口侵入上颌窦、筛 Nasal sinus papilloma is one of the most common benign tumors in nasal sinuses. Occur in the middle-aged, men are more common. It is a highly proliferative epithelial formation. Pathologically exogenous and varus type, the latter common, characterized by hyperplastic epithelial mass (tumor tissue) to the substrate within the varus, the basement membrane edema, polypoid mass occurs in the middle of the lateral nasal passages Wall; and along the nasal passages, sinus invasion of the maxillary sinus, sieve