A 40-year-old woman with no comorbidities presented with episodic postprandial bilious vomiting of 6 months’ duration and mild abdominal discomfort. Her liver function tests showed normal bilirubin with raised alkaline phosphatase and γ-glutamyltransferase. Abdominal US had shown dilatation of the common bile duct (CBD) and pancreatic duct (PD). She had previously undergone MRCP, which showed diffuse dilatation of the CBD, common hepatic duct, and intrahepatic biliary radicles with smooth tapering at the region of the ampulla, diffuse prominence of the main PD, and ectopic ampulla of Vater.