0引言膀胱小细胞癌(Small-cell carcinoma of the uri-nary bladder,SCBC),是泌尿系肿瘤中一种比较罕见的恶性肿瘤。但因其在临床和流行病学特征与膀胱移行细胞癌存在着极大的相似性,而生物学行为却呈高度恶性,进展快、转移早、预后差,如今已越来越受到肿瘤科及泌尿外科医生的 0 Introduction Small-cell carcinoma of the uri-nary bladder (SCBC) is a relatively rare malignancy in urological tumors. However, because of its clinical and epidemiological characteristics and bladder transitional cell carcinoma there is a great similarity, but the biological behavior was highly malignant, rapid progress, early metastasis, poor prognosis, and now has been increasingly subject to oncology and Urologist