azygos vein

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Noun1.azygos vein - one of a system of veins that drain the thoracic and abdominal wallsazygos vein - one of a system of veins that drain the thoracic and abdominal walls; arises as a continuation of the right ascending lumbar vein and terminates in the superior vena cava
vein, vena, venous blood vessel - a blood vessel that carries blood from the capillaries toward the heart; "all veins except the pulmonary vein carry unaerated blood"
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References in periodicals archive ?
In AM patients, the portal venous blood most commonly drained into the inferior vena cava and occasionally into the renal veins, iliac veins, azygos veins, or right atrium.[sup][2] In this case, the splenic vein and superior mesenteric vein joined together, drained into the hemiazygos vein, and ultimately entered the superior vena cava through the azygos vein.
It does however; appear that connections between the hemiazygos and azygos veins lying anterior to the aorta, "preaortic connections" are a rare finding.
Second animal showed a high amount of right ventricular filing despite the ligation of both azygos veins. The difficulty on decompressing the heart resulted a persistent ventricular arrhythmia and severe hemodynamic instability, which lead the investigators to terminate the study.
* The initial 80 cc starting 60 s before the scan allows adequate contrast filling of the returning systemic veins, particularly the brachiocephalic and azygos veins. The injection rate is kept similar to that of a 'traditional' chest survey CT scan.
We have been using angioplasty to open jugular and azygos veins in the neck and chest respectively to improve blood flow in people with MS.
In the chest there are numerous lympho-venous connections between the azygos veins and the thoracic duct (3).
Azygos veins system is quite variable in terms of anatomical course and drainage pattern.