The largest veins in the body. The superior vena cava drains blood from all parts of the body above the level of the heart, the inferior vena cava from all parts below the heart. The two veins empty into the right atrium of the heart.
Incidental note was also made of double inferior vena cavae (Figures 1 and 3) and transposition of the superior mesenteric artery and superior mesenteric vein axis with associated intestinal malrotation.
Two vena cavae, one on each side of the aorta, are present below the level of the renal veins.