Reflux cholangiography in sphincteroplasty or enterobiliary anastomosis.

Reflux cholangiography is an extension of hypotonic duodenography. In patients with abnormal enterobiliary communications, it is a rapid, effective method for demonstrating not only biliary and occasionally pancreatic ducts, but also fistulas, the duodenum, and the papilla of Vater. It is especially useful for preoperative evaluation of strictures for it enhances both the value and success of endoscopic cholangiopancreatography.