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Background Knowledge of the anatomy of the celiac trunk (CT) and arterial supply of the hepatobiliary system is essential for surgical and interventional radiological treatment of upper abdominal diseases. Objectives To determine the branching patterns of the CT and variation in origin and type of the right hepatic artery (RHA), left hepatic artery (LHA), and cystic artery (CA). Methods The anatomy of the CT in 100 cadavers from Thai adult donors was observed in 3 aspects: its branching pattern, the origin of the RHA and LHA, and the origin of the CA and its relation to the common bile duct (CBD) and common hepatic duct (CHD). Results The majority of the CT branching pattern was categorized as the type II classical pattern, which has 3 branches: the left gastric artery (LGA), splenic artery (SA), and common hepatic artery (CHA). The RHA branched from proper hepatic artery in 67 cadavers. The origin of the accessory RHA was either from the abdominal aorta or superior mesenteric artery (SMA), whereas the replaced RHA originated from the CHA, SMA, or CT. The accessory LHA ramified from CHA (2 cases) and LGA (1 case). The replaced LHA was found in 30 cadavers and 29 arose from the CHA. The single and double types of CA were found in 94 and 4 cadavers, respectively. In all, 57% of single CA passed posteriorly and 39% passed anteriorly to the CBD and CHD. Conclusions To lower posttreatment complications, variations in the anatomy and the vascular supply of hepatobiliary structures should be considered.

Anatomy of the vasculature supplying hepatobiliary structures and celiac trunk branching patterns in the Thai population