尿路肿瘤的特点是其多源性 ,复发的尿路肿瘤可以在原来的位置 ,也可以发生在整个尿路的任何部位。50 %以上的浅表性膀胱肿瘤 (Ta及 T1 )会复发 [1] ,Oldbring综合文献约40 % (1 8%～ 57% )的上尿路肿瘤同时或在其前后发生膀胱肿瘤 [2 ] 。但在膀胱肿瘤之后发生的上尿路肿瘤所占 Urinary tract cancer is characterized by its multi-source, recurrent urinary tract tumor can be in its original location, can also occur in any part of the urinary tract. More than 50% of superficial bladder tumors (Ta and T1) relapse [1], and about 40% (18% -57%) of upper urinary tract tumors in the Oldbring literature have bladder tumors either simultaneously or before and after [2] . However, the incidence of bladder cancer after the upper urinary tract cancer accounted for