azygos vein

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Related to azygos: azygos fissure, azygos lobe

azygos vein

[ā′zī·gəs ‚vān]
(anatomy)
A branch of the right precava which drains the intercostal muscles and empties into the superior vena cava.
References in periodicals archive ?
Jugular and azygos veins were evaluated with selective venography (imaging of veins after injection with a contrast dye) and intravascular ultrasound (a special imaging process that allows the physician to see from inside the blood vessels).
This patient and at least 2 others have had intrahepatic interruption of the inferior vena cava with azygos continuation (6), and persistence of the left hemiazygos vein has been described (3).
There have been a variety of mechanisms to explain the shift of ascitic fluid into the pleural space, including hypoalbuminemia, azygos vein hypertension, leakage from the thoracic duct, transdiaphragmatic lymphatic migration and most important, the pressure--gradient directed flow through diaphragmatic defects [8].
One-third of bronchial venous drainage flows via the azygos, hemiazygos and intercostal veins to the right atrium.
Intravenous reflux into the azygos vein and the inferior vena cava to the level of the hepatic venous system (Figure 2) was seen.
Some reported complications include injury to the spleen, azygos vein laceration, chylothorax, recurrent laryngeal nerve paralysis, anastomotic leaks, cardiac abnormalities, pleural injury, and tears to the posterior tracheal wall.
Examples of mediastinal vascular anomalies include left aortic arch, cervical aortic arch, right aortic arch with aberrant left subclavian artery, right arch with mirror-image branching, double aortic arch, aortic coarctation, persistent left superior vena cava, a double superior vena cava, retroaortic innominate vein, circumaortic innominate veins, interruption of the inferior vena cava with azygos and hemiazygos continuation, pulmonary artery sling, congenital absence of the left pulmonary artery, pulmonary valvular stenosis, patent ductus arteriosus, pulmonary varix, and partial anomalous pulmonary venous return.
No stranger to the entrepreneurial side of medicine, Daniel founded his first company, Azygos, Inc.
The returning systemic veins contralateral to the side injected, from the head and neck, from infradiaphragmatic veins (especially the azygos vein) and any mediastinal and hilar masses and lymph nodes and lung pathology are not enhanced at this early post-contrast phase.