Superior mesenteric vein

The superior mesenteric vein, also known as (SMV) transports blood from the small intestine and the caecum conforming to the distributions of the superior mesenteric artery. This vein is located in the abdominal cavity next to the superior mesenteric artery. Where it ends near the neck of the pancreas it forms the hepatic portal vein by coming together with the splenic vein. Other tributaries of SMV drain other organs such as the stomach, large intestine, and appendix. Some of these including the middle colic vein, right colic vein, veins from ileum, and veins from jejunum. Thrombosis is the only disorder associated with this vein and these occurrences are rare. Thrombosis is a blood clot in a blood vessel that is restricting blood flow and circulation throughout the body. Another condition that can be associated with the superior mesenteric vein can be mesenteric ischemia. This is when the small intestine is inflamed or possibly injured due to inadequate blood supply, and this can be fatal.
Written and medically reviewed by the Healthline Editorial Team
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In Depth: Superior mesenteric vein

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