报告４２例成人喉乳头状瘤，其中外生性１１例，内翻性３１例。从病理学角度分析其肿瘤组织形态属良性，但临床上有较高的复发率（３３．３％），内翻性者有较高的癌变率（２１．４％）。透射电镜观察见该肿瘤细胞生长活跃，基底细胞与结缔组织界面的结构有明显改变。 Report of 42 cases of adult laryngeal papilloma, including 11 cases of exogenous and inverted in 31 cases. From the pathological point of view, the morphology of the tumor was benign, but there was a high relapse rate (33.3%) in clinic and a higher rate of canceration (21.4%) in infertility patients. Transmission electron microscopy showed that the tumor cell growth was active, and the structure of basal cell and connective tissue interface changed significantly.