[Bilateral simultaneous upper urothelial tumors--6 and a half years postoperative follow-up study].

A 67-year-old man was admitted with the chief complaint of asymptomatic intermittent gross hematuria on June 22, 1978. No tumor was found cystoscopically. But urinary cytology indicated class IV. X-ray investigations showed a right renal pelvic tumor and left nonfunctioning hydronephrosis. Partial resection of the right renal pelvis and left nephroureterectomy were performed on August 11, 1978, because of his refusal to under go hemodialysis after radical surgery. A thumb-sized tumor was found in the left midureter. Histopathological diagnosis was equally transitional cell carcinoma grade 1 and 2, stage A. He refused adjuvant therapy. No recurrence or metastasis was detected until his death from myocardial infarction on October 4, 1984. Autopsy was not done.