Extrahepatic bile ducts constitute a significant anatomic site for surgeons when performing hepatobiliary
operations from minor procedure such as cholecystectomy to major operation such as hepatectomy. The
challenges for surgeon in performing such cases increase when congenital variance of biliary tree occurs which
may lead to unintentional bile duct injuries. We reported a case of a lady who presented with obstructive
jaundice secondary to huge distal common bile duct stone. The presence of right posterior segmental hepatic
duct, which rarely occurs, was discovered during intraoperative cholangiogram before common bile duct
exploration. The operation was successful without incidence of biliary duct injury.