accessory hemiazygos vein


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Noun1.accessory hemiazygos vein - a vein formed by the union of the 4th to 7th posterior intercostal veinsaccessory hemiazygos vein - a vein formed by the union of the 4th to 7th posterior intercostal veins; empties into the azygos vein
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"
References in periodicals archive ?
Sometimes, the accessory hemiazygos vein may drain either directly or after forming a common trunk with the left superior intercostals vein into the left brachiocephalic vein.
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.
Fluoroscopy showed the catheter coursing from left internal jugular vein into the accessory hemiazygos vein (arrow in Figure 1 Panel B).