[A patient with a vesico-uterine fistula].

In a 20-year-old woman with a uterus didelphys a vesicouterine fistula was diagnosed after caesarean section. The symptoms suggested a vesico-vaginal fistula but no abnormalities could be detected vaginally and the methylene-blue test was negative. The fistula was visualised by instillation of radiopaque contrast fluid into the vesical fistula opening, using a ureter catheter. The patient was operated via a transperitoneal route with interposition of peritoneum between the urinary bladder and the uterus.