1 — Superior rectal vein; 2 — Superior mesenteric vein; 3 — Right colic vein; 4 — Right gastro-omental vein; Right gastro-epiploic vein; 5 — Right gastric vein; 6 — Hepatic portal vein; 7 — Right branch; 8 — Left branch; 9 — Left gastric vein; 10 — Splenic vein; 11 — Left gastroomental vein; Left gastro-epiploic vein; 12 — Inferior mesenteric vein; 13 — Middle colic vein; 14 — Left colic vein; 15 — Jejunal veins; Ileal
veins; 16 — Sigmoid veins