Inferior mesenteric vein

In human anatomy, the inferior mesenteric vein (IMV) is a blood vessel that drains blood from the large intestine. It usually terminates when reaching the splenic vein, which goes on to form the portal vein with the superior mesenteric vein (SMV).

Inferior mesenteric vein
The portal vein and its tributaries. The superior mesenteric vein and splenic vein, into which the inferior mesenteric vein empties. Leinal vein is an old term for splenic vein. Anatomical position.
Superior and inferior duodenal fossæ.
Details
SystemHepatic portal system
Drains tosplenic vein
Arteryinferior mesenteric artery
Identifiers
Latinvena mesenterica inferior
TA98A12.3.12.032
TA25127
FMA15391
Anatomical terminology

Structure

The inferior mesenteric vein merges with the splenic vein, posterior to the middle of the body of the pancreas.[1] The splenic vein then merges with the superior mesenteric vein to form the portal vein.[1]

Tributaries

Tributaries of the inferior mesenteric vein drain the large intestine, sigmoid colon and rectum. These include:

Variation

Anatomical variations include the inferior mesenteric vein draining into the confluence of the superior mesenteric vein and splenic vein and the inferior mesenteric vein draining in the superior mesenteric vein.

Clinical significance

The inferior mesenteric vein may be damaged during surgery on the body and tail of the pancreas.[2] If a serious laceration occurs, the inferior mesenteric vein may be ligated, as other veins can drain the large intestine.[2]

Additional images
  • The pancreas and duodenum from behind.

References
  1. Pirog, T. P. (December 2019). "POST-HARVEST TREATMENT OF VEGETABLES WITH EXOMETABOLITES OF Nocardia vaccinii IMV B-7405, Аcinetobacter calcoaceticus IMV В-7241 AND Rhodococcus erythropolis IMV Ас-5017 TO EXTEND THEIR SHELF LIFE". Biotechnologia Acta. 12 (6): 46–55. doi:10.15407/biotech12.06.046. ISSN 2410-7751.
  2. Dhanireddy, Kiran K.; Fishbein, Thomas M. (2009-01-01), Evans, Stephen R. T. (ed.), "Chapter 36 - Distal Pancreatectomy", Surgical Pitfalls, Philadelphia: W.B. Saunders, pp. 375–378, doi:10.1016/b978-141602951-9.50046-3, ISBN 978-1-4160-2951-9, retrieved 2021-02-06
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