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上泌尿道肿瘤(肾盂、输尿管)同时或其后发生膀胱肿瘤的发病率约30～50%;相反,继发于治疗膀胱原发性肿瘤而发生上泌尿道肿瘤者则不太常见。作者从1970～1988收治尿上皮肿瘤(上泌尿道与膀胱肿瘤)535例,其中40例上泌尿道肿瘤伴同膀胱肿瘤。此40例中18例(45%)为同时性;17例(43%)为异时性。即先有原发性上泌尿道肿瘤,在18.5±14.1(X±SD)个月后发生膀胱肿瘤;5例(12%)异时性是先有原发性膀胱肿瘤,在40.2±13.6个月后发生上
The incidence of bladder tumors in the upper urinary tract tumors (kidneys, ureters) at the same time or afterwards is about 30 to 50%; on the contrary, secondary urinary tract tumors secondary to the treatment of primary bladder tumors are less common. The authors treated 535 cases of urinary epithelial tumors (upper urinary tract and bladder tumors) from 1970 to 1988, and 40 cases of upper urinary tract tumors were associated with bladder tumors. Of these 40 cases, 18 cases (45%) were simultaneity; 17 cases (43%) were allochronic. In other words, there were primary upper urinary tract tumors. Bladder neoplasms occurred 18.5±14.1 (X±SD) months later; 5 (12%) allografts were pre-existing primary bladder tumors, 40.2±13.6 After months