What is the procedure for a ureterovesical fistula surgery?

Rare condition. Ureter runs into the bladder. Ureterovesical fistula has to be between the intrvesical ureter and bladder & is usually a complication following ureteral reimplant surgery. Procedure for repair is a redo ureteral reiplant excising portion of ureter distal to the fistula. This often requires a so called "boari flap", bringing up flap of bladder to shorten length of ureter needed for reimplant.