Combined retrocaval ureter and retroperitoneal fibrosis: report of a case.

The first case of a simultaneous retrocaval ureter and retroperitoneal fibrosis of the right ureter is presented. The diagnosis was made roentgenographically on the basis of the S-shaped course of the proximal right ureter and medial deviation of the tapered and obstructed mid ureteral segment. This was confirmed by exploration of the right ureter and retroperitoneal biopsy. The surgical treatment of this unusual entity is described.