1 – Hepatic portal vein; 2 – Superior mesenteric vein; 3 – Splenic vein; 4 – Pancreatic veins; 5 – Pancreaticoduodenal veins
1 – Hepatic portal vein; 2 – Superior mesenteric vein; 3 – Splenic vein; 4 – Pancreatic veins; 5 – Pancreaticoduodenal veins