Figure 2. Deep dissection of the region celiac artery and portal triad. (A) Photograph of the celiac artery and portal triad after the stomach was divided at the pyloric canal and reflected. The pancreas was also divided at the neck and reflected. In this view, the proximal segment of the accessory right hepatic artery (ARHA) can be seen arising from the superior mesenteric artery (SMA). This segment of the ARHA (highlighted in magenta asterixis) is behind the neck of the pancreas and to the right of the origin of the hepatic portal vein right after it forms the union of the splenic vein (SV) and the superior mesenteric vein (SMV). This segment then disappeared underneath the portal vein. (B) A photograph of the ARHA after the removal of the portal vein to expose most the ARHA’s course. The ARHA also passed deep to the common bile duct before it reached the porta hepatis. A different segment of ARHA is highlighted by magenta asterisks and red arrows. Note that 2 cystic arteries arose from the terminal part of the ARHA. ARHA – accessory right hepatic artery; CBD – common bile duct; CD – cystic duct; CHA – common hepatic artery; CHD – common hepatic duct; CL – caudate lobe of the liver; GB – gallbladder; IVC – inferior vena cava; LGA – left gastric artery; PHA – proper hepatic artery; PV – portal vein; QL – quadrate lobe of the liver; SMA – superior mesenteric artery; SMV – superior mesenteric vein; SV – splenic vein.