Renal cell carcinoma with renal artery aneurysm

We describe a patient who was diagnosed as renal cell carcinoma with renal artery aneurysm in the contralateral kidney. Right aneurysmectomy followed by simple arteriorrhaphy with termino-lateral anastomosis, and then left radical nephrectomy were performed in one session. The patient did well postoperatively. Generally, surgical indication of renal artery aneurysm itself has been yet a matter of debate. In such case like this, however, it seems better to resect any kind of aneurysm of the opposite side, taken into consideration the haemodynamic changes after nephrectomy. Surgical indications are commented on.