[Angiographic demonstration of varices in the renal pelvis and the upper ureter (author's transl].

Two patients are described in whom varices in the renal pelves and upper ureters had been demonstrated angiographically. In the patients the varices were due to compression of the renal veins by the superior mesenteric artery. Renal vein varices should be considered as a cause of undiagnosed haematuria and, where necessary, phlebography should be carried out.