Figure 7d. Ureterovaginal fistula in a woman with a watery vaginal discharge. (a) VCUG image shows a normal appearance. Thus, a vesicovaginal or urethrovaginal fistula is ruled out. (b) Intravenous urogram shows obstruction of the left ureter, which is likely due to a surgical clip (arrow). (c) CT urogram shows the fistula, which is faintly outlined by contrast material (arrowheads). (d) CT urogram shows resultant opacification of the vagina (V).