Azygous vein drains
The azygous vein is formed by the confluence of the Lumbar azygous vein, Right ascending lumbar vein and right subcostal vein. It passes superiorly through the aoic apeure, posterior to the right diaphragmatic crus and anterior to the twelth veebral body. The azygos vein transpos deoxygenated blood from the posterior walls of the thorax and abdomen into the superior vena cava vein.
Into superior vena cava
Anterior to costochondral junction
Oesophagus
Directly into right atrium
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