Preoperative three-dimensional computed tomography angiography. The RHA branched from the GDA. CHA, common hepatic artery; GDA, gastroduodenal artery; RGA, right gastric artery; RGEA, right gastroepiploic artery; LGA, left gastric artery; LHA, left hepatic artery; RHA, right hepatic artery; SPA, splenic artery.