THE anatomical descriptions of the venous system of the seal have impressively described the large hepatic venous sinuses and the existence of a sleeve-like valve surrounding the inferior vena cava 1.

Compression or obstruction of the superior vena cava, a major vein in your body, can lead to superior vena cava syndrome, or SVCS. It’s treatable, but most cases are caused by cancer. The superior ...

The superior vena cava is the vein that carries deoxygenated blood from the upper body to the heart. Superior vena cava syndrome is often a secondary problem caused by a cancerous tumor or a blood ...