Influence of periampullary diverticulum on the occurrence of pancreaticobiliary diseases and outcomes of endoscopic retrograde cholangiopancreatography.

Background and aimPeriampullary diverticulum (PAD) is frequently encountered in patients undergoing endoscopic retrograde cholangiopancreatography (ERCP). The aim of this study was to investigate the association of PAD with pancreaticobiliary diseases as well as the impact of PAD on the technical su