Superior mesenteric vein

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Superior mesenteric vein
Superior mesenteric vein

Superior mesenteric vein is part of the venous drainage system of the upper gastrointestinal tract draining the jejunum and ileum.

Anatomy[edit | edit source]

The superior mesenteric vein lies behind(posterior) the neck of the pancreas and in front of (anterior) uncinate process of pancreas.

Course[edit | edit source]

The superior mesenteric vein combines with the splenic vein to form the hepatic portal vein.

Variations[edit | edit source]

Anatomical variations of the superior mesenteric vein include:

  • Absence of common draining trunk, leading to direct drainage in to the splenic vein
  • Variations in the portal vein are also possible

Pathology[edit | edit source]

Common problems with mesenteric vein include mesenteric vein thrombosis, a blood clot, that leads to mesenteric ischemia and can be fatal.


Superior mesenteric vein Resources
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Contributors: Prab R. Tumpati, MD