The vena cava is a large vein that collects blood from either the upper or lower half of your body. It receives blood from several smaller veins. This is blood with the oxygen removed that the vena ...
Vena caval obstruction is narrowing or occlusion of the caval veins (the inferior vena cava or the superior vena cava), which return blood from the body to the heart. It is most commonly caused by ...
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