Background:
One of the rare complications of ileal neobladder after radical cystectomy is pouch-to-intestine fistula. There isn't a classic method to intraoperative diagnosis of small fistula.
Case presentation:
An entero-pouch fistula was occurred in a patient after radical cystectomy with ileal orthotopic pouch. Because of failed conservative management, the patient was candidate for surgery. The hidden small fistula in the small intestine was diagnosed by high intraluminal hydrostatic pressure (by intraluminal saline injection).
Conclusion:
Intraoperative diagnosis the intestinal opening of a small fistula is very important. At the time of surgery if the fistula tract becomes open (during releasing the adhesions), it may leak in the peritoneum in postoperative period. Intraluminal high pressure is a useful method for intraoperative small hidden intestine opening.