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[A case of synchronous contralateral renal cell carcinoma and ureteral transitional cell carcinoma].

A case of synchronous contralateral renal cell carcinoma and ureteral transitional cell carcinoma is reported. A 56-year-old man, who had been incidentally found to have an abnormal mass in the upper pole of the right kidney on ultrasound sonography, was admitted on January 8, 1985. CT scanning and renal arteriography revealed right renal malignancy. Right radical nephrectomy was performed and histological examination showed adenocarcinoma, granular cell type of the right kidney. He was discharged on February 3, 1985. Two months postoperatively, he was rehospitalized for macroscopic hematuria. Left retrograde pyelogram showed obstruction at middle ureter and cytology of urine from left ureter was positive. So a left ureteral tumor was suspected, and partial resection of left ureter and ureteroureterostomy were performed. Histological examination revealed ureteral transitional cell carcinoma. He is now doing well at 6 months following the lat surgery, without any evidence of recurrence.