The left colic vein is created from numerous tributaries, consisting of ascending along with descending sections that represent likewise titled arteries. The left colic vein generally is located superior to its matching artery, and also has a smaller route since the inferior mesenteric vein is located lateral to the inferior mesenteric artery. Sometimes, there are two left colic veins that both together drain inside the inferior mesenteric vein. The inferior mesenteric vein starts as the superior rectal vein, emerging via the rectal plexus, getting attachments with the middle and inferior rectal veins. It goes up posterior to the peritoneum, and also gets the sigmoid veins along with the left colic vein. The left colic vein advances with the middle colic vein at the splenic flexure of the colon.
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