Science Daily — An anti-reflux valve developed to help esophageal cancer patients also has been shown to help those with bile duct obstruction, according to Kulwinder S. Dua, M.D., a research physician at the Medical College of Wisconsin in Milwaukee. The study, using the anti-reflux biliary stent in patients with cancer of the pancreas or bile duct, has been accepted for publication in the journal Gastrointestinal Endoscopy.>>> Discuss This Story