The abdominal trunk is a large artery in the body, which is short and thick, about 2.5 cm long, flat in the plane of the 1st lumbar vertebra, slightly below the diaphragmatic aortic fissure, and originating from the anterior wall of the abdominal aorta. The celiac trunk proceeds forward up to the superior margin of the pancreas and then immediately divides into terminal branches, which branch out to upper abdominal organs such as the ventral segment of the esophagus, stomach, duodenum, liver, gallbladder, pancreas, spleen, and greater omentum. The celiac trunk is encircled by the celiac plexus, with celiac ganglia on each side. In general, the celiac trunk is usually divided into three terminal branches: the left gastric artery, the common hepatic artery, and the splenic artery, but the three terminal branches may occasionally be variant, for example, it is occasionally seen clinically that one of the three terminal branches originates from the superior mesenteric rectal artery.