Inferior mesenteric vein

Inferior Mesenteric Vein

The inferior mesenteric vein.

The Inferior Mesenteric Vein (IMV) is a blood vessel that drains blood from the large intestine and the rectum. It is part of the Hepatic Portal System, which carries blood from the gastrointestinal tract and spleen to the liver.

Anatomy

The IMV begins in the rectum as the superior rectal vein and ascends to the left, in front of the Sacrum. It receives blood from the sigmoid veins and the left colic vein, and it ends by merging with the splenic vein or the superior mesenteric vein to form the portal vein.

Clinical Significance

The IMV is clinically significant because it can be involved in various diseases, such as portal hypertension, ischemic colitis, and colorectal cancer. In colorectal cancer, the IMV may be used as a landmark for surgical dissection.

See Also

• Superior mesenteric vein
• Hepatic portal vein
• Veins of the torso

References

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