膀胱肿瘤具有多种组织学类型,伴有腺样或绒毛状特征的膀胱肿瘤如绒毛状腺瘤、原位腺癌、浸润性腺癌、微乳头状型尿路上皮癌等都曾被描述过。然而,既有绒毛状又有腺样结构的尿路上皮癌尚未被明确定义。作者研究了14例绒毛状腺样分化的尿路上皮癌。具有绒毛状腺样特征的病例如果 Bladder tumors have many histological types, bladder tumors with adenoid or villous features such as villous adenoma, adenocarcinoma in situ, invasive adenocarcinoma, micropapillary urothelial carcinoma and the like have all been described. However, urothelial carcinoma, both villous and adenoidal, has not yet been clearly defined. The authors studied 14 cases of villous adenoid differentiation of urothelial carcinoma. Cases with villous adenoid features