Superior mesenteric vein

The superior mesenteric vein is a blood vessel that drains blood from the small intestine (jejunum and ileum). Behind the neck of the pancreas, the superior mesenteric vein combines with the splenic vein to form the hepatic portal vein. The superior mesenteric vein lies to the right of the similarly named artery, the superior mesenteric artery, which originates from the abdominal aorta.

Superior mesenteric vein
The abdomen viewed from the front, showing the portal venous system, showing the superior mesenteric vein and its tributaries. (Lienal vein is an old term for splenic vein.)
Details
SystemHepatic portal system
Drains tohepatic portal vein
Arterysuperior mesenteric artery
Identifiers
Latinvena mesenterica superior
TA98A12.3.12.018
TA25113
FMA14332
Anatomical terminology

Structure

Tributaries of the superior mesenteric vein drain the small intestine, large intestine, stomach, pancreas and appendix and include:

The superior mesenteric vein combines with the splenic vein to form the portal vein.[1][2]

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.[3]

References
  1. "Diagnostic angiography in hepatobiliary and pancreatic disease: Indications". Blumgart's Surgery of the Liver, Biliary Tract and Pancreas, 2-Volume Set: 392–402.e1. 2017-01-01. doi:10.1016/B978-0-323-34062-5.00021-2.
  2. Comar, Kevin M.; Sanyal, Arun J. (2004-01-01), Johnson, Leonard R. (ed.), "Portal Hypertension and Esophageal Varices", Encyclopedia of Gastroenterology, New York: Elsevier, pp. 212–219, ISBN 978-0-12-386860-2, retrieved 2021-01-24
  3. Tessier, DJ; Williams, RA (2020-12-05). "Acute Mesenteric Ischemia: Background, Anatomy, Pathophysiology" – via eMedicine. Cite journal requires |journal= (help)

Additional images
  • Abdominal cavity.Superior mesenteric vein.Deep dissection.
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