Fig. 2.

Wallace ureterouretero and ureteroenteric anastomoses. A. Wallace 1 technique: Ureters are spatulated to the same length and medial walls anastomosed in line. The free edges of the newly conjoined ureters are then anastomosed to the proximal end ileal loop. B. Wallace 2 technique (‘head-to-tail anastomosis’): After spatulation, the distal ureteric margin is anastomosed to apex of spatulated contralateral ureter. The free edges of the newly conjoined ureters are again anastomosed to the proximal end ileal loop.