A deviant anterior portal vein in the hepatoduodenal ligament with aberrant origin of hepatic arteries directly from the celiac trunk: A case report of two patients underwent pylorus preserving pancreatoduodenectomy (PPPD)

Abstract Introduction: The portal vein (PV) originates behind the neck of the pancreas, where it is formed classically by the union of the superior mesenteric vein (SMV) and the splenic vein (SV) [1]. It courses upwards towards the liver in the free margin of the lesser omentum, the hepatoduodenal ligament, along with other structures of the portal triad, i.e. proper hepatic artery (PHA) and common bile duct (CBD) anterior to it [1]. The PV is found posterior to the PHA