Celiomesenteric trunk: New classification based on multidetector computed tomography angiographic findings and probable embryological mechanisms

Figure 2 Five types of celiomesenteric trunk. A: Type I, a hepato-gastro-spleno-mesenteric trunk, can be further divided into type Ia-;the left gastric artery (LGA) originating from the celiac trunk; B: Type Ib-;the LGA originating from the single common trunk; C: Type II, a hepato-spleno-mesenteric trunk with LGA arising from the aorta; D: Type III, a gastro-spleno-mesenteric trunk with the common hepatic artery (CHA) arising from the aorta; E: Type IV, a hepato-gastro-mesenteric trunk with the splenic artery (SA) arising from the aorta; F-H: Type V, any other variation that meets the above definition of the celiomesenteric trunk (CMT), for example, a CMT with the LGA originating from the CHA (F) or the SA (G), or a CMT with the CHA arising from the superior mesenteric artery (H). CMT: Celiomesenteric trunk; CT: Celiac trunk; SMA: Superior mesenteric artery; LGA: Left gastric artery; CHA: Common hepatic artery; SA: Splenic artery; GDA: Gastroduodenal artery.