The ileocolic vein is located in the digestive tract. It draws blood from the appendicular vein, and it drains deoxygenated blood from the cecum, ileum and colon of the large intestine. From there, this deoxygenated blood flow to the superior mesenteric vein, which joins with the hepatic portal vein. As part of the venal circulatory system, all deoxygenated blood flows back to the lungs and the heart, where the circulatory system both begins and ends. The ilecolic artery should never be mistaken for the ileocolic vein. Arteries flow in the opposite direction. In this regard, the ileocolic artery delivers oxygenated blood the cecum, ileum and colon. Like it's venal counterpart, the artery has a branch that serves the appendix. Like many other parts of the venal system, the ileocolic vein may be subject to occlusion or thrombosis. Although thrombosis is not common in the ileocolic vein, it is hard to accurately treat when the condition presents itself. Surgical intervention and anticoagulant medication is a frequently advised treatment.
Written and medically reviewed by the Healthline Editorial Team
In Depth: Ileocolic vein