[A case report: occurrence of bladder carcinoma in the defunctionalised bladder in a patient after operation of left ureteral carcinoma].

An eighty year-old woman was diagnosed as left ureteral carcinoma and right dysfunctional kidney in 1984. Left partial ureterectomy, partial cystectomy, and left ureterocutaneostomy were performed and her bladder was left behind after the operation. In 1990 (72 months after the operation), she was aware of bleeding from the urethra. A bladder wash was performed, demonstrating malignant cells on cytological examination, and cystoscopy revealed a papillary tumor in the defunctionalized bladder. Total cystectomy was performed and the histological findings of the surgical specimen showed transitional cell carcinoma, grade 2, pTaNoMo. This case shows the need for periodic examinations of the defunctionalized bladder, because renal pelvic and ureteral carcinoma tends to recur in the bladder within two years after operation and because tumors rarely developed in the defunctionalized bladder.