Definition : A vein which arises from the right ascending lumbar vein or the vena cava, enters
the thorax through the aortic orifice in the diaphragm, and terminates in the superior
vena cava. [MeSH];
A vein which arises from the right ascending lumbar vein or the vena cava, enters
the thorax through the aortic orifice in the diaphragm, and terminates in the superior
vena cava. [MeSH]