世界卫生组织/国际泌尿病理学2004年分类[WHO(2004)/ISUP]对尿路上皮肿瘤分级标准化进行了有益尝试。在乳头状膀胱肿瘤分类中,新加入了“具低度恶性潜能的乳头状尿路上皮肿瘤(PUNLMP)”条目。WHO(2004)/ISUP 尿路上皮肿瘤分类系统与被广泛接受的 WHO 1973年分类相比,具有数项潜在优势:(1)详细定义了不同瘤前病变和不同分级肿瘤的形态标准,包括更加标准化地定义了非浸润性乳头状尿路上皮性肿瘤(NIPUT)的组织学分级标 WHO / International Classification of Urological Pathology 2004 [WHO (2004) / ISUP] is a useful attempt to grade and standardize urothelial tumors. In the classification of papillary bladder tumors, a new entry, “PUNLMP with low malignant potential,” has been added. The WHO (2004) / ISUP Urothelial Epithelial Tumor Classification System has several potential advantages over the widely accepted WHO classification of 1973: (1) Morphology standards for different precancerous lesions and different grading tumors are defined in detail, including more The histological grade of the non-invasive papillary urothelial carcinoma (NIPUT) was defined standardized