Surgical strategies for challenging common bile duct stones in the endoscopic era: A comprehensive review of current evidence

Figure 1 Common anatomy of portal triad, illustrating the relationship between the extrahepatic bile duct, hepatic artery proper, and portal vein. The figure also demonstrates the boundaries of the hepatocystic triangle of Calot and vascular supply to common bile duct at the 3 and 9 o’clock position. CBD: Common bile duct