The azygos vein arises as a continuation of the right ascending lumbar vein at the level of the first lumbar intervertebral space. It pierces the diaphragm to the right of the aorta and continues ...

Though it is well known that dilated tortuous azygos and hemiazygos veins can be evident as masses on the right side of the vertebral column on plain films of the chest, two examples presented here ...

Evaluating patients with multiple sclerosis who have narrowed jugular and azygos veins -- and the value of widening those veins with angioplasty -- warrants careful, well-designed research, according ...