The portal vein, or hepatic portal vein, is the main blood vessel of the portal venous system (PVS), which delivers blood to the liver from the stomach, intestines, spleen, gallbladder, and pancreas.

The inferior vena cava (also known as IVC or the posterior vena cava) is a large vein that carries oxygen-depleted blood from the torso and lower body to the right side of the heart. From there ...

The venous anatomy of the lower leg is made up of two ... above the muscle fascia in the subcutaneous tissues. The principal veins in the superficial system are the great saphenous vein (GSV ...