Early Pancreatic Stent Placement for Preventing PEP

In the EPSP group, a single pig-tail pancreatic stent (5Fr) will be inserted instantly after ERC or EST, and subsequent biliary procedures will proceed as planned. In contrast, in the LPSP group, while keeping the PD guidewire in place, a single pig-tail PD stent (5Fr) will be ultimately placed after all completion of therapeutic biliary procedures, e.g. biliary stone removal or drainage.