The middle colic vein drains the transverse colon.

[1] As the superior mesenteric vein drains to the hepatic portal vein, the middle colic vein is considered part of the hepatic portal system.

This vein also carries nutrients absorbed from the large intestine to the liver.

This vein is sometimes used as the point of catheter insertion for treatment of acute portal and mesenteric vein thrombosis.

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