[Stenosis of the pyeloureteral junction and contralateral renal carcinoma].

We report a case of advanced ureteropelvic junction obstruction associated with contralateral renal carcinoma in a 39-year-old male patient who consulted for frequent episodes of renal colic and gross asymptomatic hematuria. The results of the renal function tests and the radiological and isotope work up indicated a two-stage surgical procedure of pyeloplasty and contralateral partial nephrectomy. At 6 years follow up the patient is tumor free and renal function is preserved.