Superior mesenteric vein
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Through Blood vessel, Blood and Pancreas
Structure
Tributaries of the superior mesenteric vein drain the small intestine, large intestine, stomach, pancreas and appendix and include:
- Right gastro-omental vein (also known as the right gastro-epiploic vein)
- inferior pancreaticoduodenal veins
- veins from jejunum
- veins from ileum
- middle colic vein – drains the transverse colon
- right colic vein – drains the ascending colon
- ileocolic vein
The superior mesenteric vein combines with the splenic vein to form the portal vein.
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Clinical significance
Thrombosis of the superior mesenteric vein is quite rare, but a significant cause of mesenteric ischemia and can be fatal. It is estimated that 10–15% of mesenteric ischemia is due to mesenteric thrombosis.
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