It is the lower, or inferior, part of the vena cava—a large vein also made up of the superior vena cava that carries blood from the head, neck, arms, and chest in the upper body to the heart.

Transthoracic echocardiography and CT demonstrated the presence of a mixed cystic/solid component tumor involving the inferior vena cava, heart and pulmonary artery. Complete resection of the ...

as well as in the heart's electrical system. In regards to blood flow, deoxygenated blood from the superior and inferior vena cava and the coronary sinus collect in the right atrium. From there ...