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We report 2 cases of synchronous bilateral renal oncocytoma treated by radical nephrectomy on 1 side and by partial nephrectomy on the other side. Long-term followup serves to confirm the noninvasive nature of this disease. We recommend conservative management based upon radiological and gross pathological findings.

Renal calculi were removed from 2 women — in 1 case by renal bisection and in the other by nephrolithotomy. In each case a small bulldog clamp was applied to the renal artery for less than 30 minutes. Both patients suffered renal artery thrombosis necessitating nephrectomy. When the histories of these patients were reviewed the common factor found was oral contraceptives, suggesting that oral contraceptives may predispose to renal artery thrombosis.

A case of sarcoma of the prostate developing 13 years after suprapubic prostatectomy is reported.