The posterior cecal vein is located around the cecum, which connects the large intestine and colon. The two cecal veins are located on either side of the cecum. The anterior vein is found on the front side, while the posterior cecal vein is located on the back side.

These veins carry blood in need of oxygen from the cecum to superior mesenteric vein, which then carries it to liver for processing and filtering. The veins also carry blood from the appendicular vein, a branch that connects with the appendix.