This book aims to provide the basic technology and recent advances in biliopancreatic endoscopy. The method of Endoscopic retrograde cholangiopancreatography (ERCP) is popularly applied to enlarge the papillary orifice for removal of biliary and pancreatic stones, to relieve obstruction of distal bile duct or pancreatic duct by nasobiliary / nasopancreaticdrainage or stenting, and to remove the premalignant tumor of papilla in recent four decades. The diagnostic role of ERCP is already replaced by the noninvasive images such as abdominal sonography, computed tomography, magnetic resonance...