azygos vein


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Related to azygos vein: thoracic duct, hemiazygos vein

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 ?
Inadvertent port: Catheter placement in azygos vein.
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.
1) The syndrome is characterized by bilateral bilobed leftsided lungs and hyparterial bronchial pattern, intrahepatic IVC interruption with continuation of the azygos vein, a centrally located transverse liver, a stomach in an indeterminate position, and multiple spleens, all of which were present in our patient.
Therefore, with the partial atrophy of the prerenal division of the IVC, the blood returning from the lower extremities is partially shunted from the supracardinal system through the suprasubcardinal anastomosis to the retrocrural azygos vein, which is derived from the thoracic segment of the right supracardinal vein and partially shunted to the hepatic segment of the IVC through the residual prerenal segment.
The azygos system of veins is considered to be, the azygos vein, along with its left-sided counterparts, the hemiazygos vein and the accessory hemiazygos vein.
Migration of jugular or subclavian venous catheters into inferior tributaries of the brachiocephalic veins or into the azygos vein, with possible complications.
While doing dissection of thorax an Azygos vein about 1 cm diameter was noticed (Fig-1).
But the lumbar azygos vein was absent (though present on the right side) and a dilated communicating vein (of almost equal thickness as the left renal vein) was seen to pass deep to the left psoas major muscle into the left para-vertebral gutter and communicate with the left ascending lumbar vein (figure 1 & 2).
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.