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 ?
The presence of the azygos artery or a fenestration variant of the anterior cerebral artery or anterior communicating artery have been associated with the presence of aneurysms due to the turbulent flow created by defects in the tunica media in the proximal and distal region of the fenestrated segment (Boleaga-Duran et al.
In this instance, the blood related to the lower segment of the body reaches the heart through hypoplastic IVC, the azygos and hemiazygos veins which appear dilated, and also through various collaterals developed as a compensation.
Measurements of the main PA lumen, ascending aorta, azygos vein, and SVC, were obtained.
An echocardiogram showed an interrupted inferior vena cava (IVC) with the azygos system in continuity with the superior vena cava (SVC), good-sized branch pulmonary arteries and left-to-right shunting of blood.
The thoracic duct receives drainage from the abdominal cavities, and lies superior to the azygos vein, close to the thoracic aorta (4).
Nonetheless, during the procedure Dake increased the level of Zahn's sedation until he was essentially unconscious, and then turned the planned 30-minute diagnostic venogram into a five-hour surgery, placing five stents in Zahn's jugular and azygos veins.
sup][1] Differential diagnosis may include the azygos vein which may follow a course behind the trachea before entering the superior vena cava, the thoracic outlet syndrome and esophageal dysphagia caused by ARSA, motility disorders, as well as mechanical and inflammatory diseases.
Another Study16 showed octreotide reduces the azygos blood flow and it inhibits the postprandial increase in portal pressure in cirrhotic patients with portal hypertension.
Right-sided PAPVR consists of anomalous drainage of a right pulmonary vein to superior vein cava, azygos vein, coronary sinus, or inferior vena cava.
1), the stenosis was classified according to the Stanford classification [7] system into 4 types: (i) type I describes a partial obstruction of the SVC (up to 90%) with remaining patency and antegrade perfusion of the azygos vein; (ii) type II shows increasing obstruction (90-100%); (iii) type III is complete obstruction with reverse circulation in the azygos vein; and (iv) type IV is characterised by complete obstruction of the SVC and the azygos vein, with the development of collateral circulations via the chest wall and the internal mammary veins.