Fig. 2

Operative findings. The aRHA branching from the GDA was detected (a). The cholecystic artery was found, arising from the aRHA (b). The gallbladder and the extrahepatic bile duct were resected, preserving the aRHA (c). Macroscopically, the tumor was 2.5 × 2.0 cm (d). CHA common hepatic artery, GDA gastroduodenal artery, PHA popper hepatic artery, aRHA accessory right hepatic artery, LGA left gastric artery, LHA left hepatic artery. Arrow: cut end of the bile duct