Middle colic vein

The Middle Colic Vein is a blood vessel that drains blood from the transverse colon, which is a part of the large intestine. It is a tributary of the superior mesenteric vein, which eventually drains into the portal vein.

Etymology

The term "colic" is derived from the Greek word "kolikos," referring to the colon. The "middle" part of the name refers to the vein's position relative to the other colic veins, namely the right colic vein and the left colic vein.

Anatomy

The Middle Colic Vein typically arises from the transverse colon. It then travels upwards and merges with the superior mesenteric vein. This vein is part of the portal venous system, which carries blood from the gastrointestinal tract and spleen to the liver.

Clinical Significance

The Middle Colic Vein, like other veins in the portal venous system, can be affected by various medical conditions. For instance, portal hypertension can lead to the enlargement of this vein, which can cause complications such as varices and gastrointestinal bleeding. Furthermore, the vein can be involved in colorectal cancer, as tumor cells can spread through the venous system.

Related Terms

• Portal vein
• Superior mesenteric vein
• Transverse colon
• Right colic vein
• Left colic vein
• Portal hypertension
• Varices
• Gastrointestinal bleeding
• Colorectal cancer

• 
  Gray's Anatomy illustration of the middle colic vein