Superior mesenteric vein
Citation, DOI & article data
Origin and course
Mesenteric venous arcades, which accompany the arteries, unite to form the jejunal and ileal veins in the small bowel mesentery and are joined by the tributaries listed below. Often the superior mesenteric vein is considered the common trunk after all the chief tributaries have joined.
The gastrocolic trunk drains into the right-hand aspect of the SMV just anterior to the uncinate process of the pancreas. It unites with the splenic vein posterior to the neck of the pancreas (at the level of L1) to form the portal vein.
The SMV is accompanied by the SMA and normally lies to the right. If it is not in this position, it can indicate intestinal malrotation.
- anterior: neck of pancreas
- posterior: uncinate process of pancreas
- mesenteric venous arcades (jejunal and ileal veins)
- ileocolic vein
- right colic vein
- inferior pancreaticoduodenal vein
- right gastroepiploic vein
- middle colic vein
- anterior superior pancreaticoduodenal vein
- absence of common draining trunk with two "intestinal trunks" draining directly into the splenic vein (~10%) 4,5
- variations in the formation of the portal vein
- 1. Buttler P. Applied radiological anatomy. Cambridge University Press. (1999) ISBN:0521481104. Read it at Google Books - Find it at Amazon
- 2. Snell R. Clinical anatomy by regions. ISBN:B008C8OQOI. Read it at Google Books - Find it at Amazon
- 3. Gray's basic anatomy. Churchill Livingstone. ISBN:1455710784. Read it at Google Books - Find it at Amazon
- 4. Graf O, Boland GW, Kaufman JA et-al. Anatomic variants of mesenteric veins: depiction with helical CT venography. AJR Am J Roentgenol. 1997;168 (5): 1209-13. doi:10.2214/ajr.168.5.9129413 - Pubmed citation
- 5. Kim HJ, Ko YT, Lim JW et-al. Radiologic anatomy of the superior mesenteric vein and branching patterns of the first jejunal trunk: evaluation using multi-detector row CT venography. Surg Radiol Anat. 2007;29 (1): 67-75. doi:10.1007/s00276-006-0153-5 - Pubmed citation