accessory hemiazygos vein

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Related to Accessory hemiazygos: hemiazygos vein
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  • noun

Synonyms for accessory hemiazygos vein

a vein formed by the union of the 4th to 7th posterior intercostal veins

References in periodicals archive ?
AV, Azygos vein; HV, Hemiazygos vein; AHV, Accessory hemiazygos vein.
The diameters of the azygos vein (AV), hemiazygos vein (HV) and accessory hemiazygos vein (AHV) at various levels: all measurements in mm.
Communications of the hemoazygos, accessory hemiazygos veins into the azygos vein are identified and exposed by reflecting the oesophagus and aorta upwards.
(1) Cannulation of the accessory hemiazygos vein is rare but can happen when the accessory hemiazygos vein drains into the left brachiocephalic vein instead of the azygos vein normally.
The upper part of the azygos venous line develops into the accessory hemiazygos vein, which drains the posterior fourth to sixth or sometimes seventh intercostal spaces.
The lumbar vein then ascended upwards in the thorax and joined with the left subcostal vein to continue further up as the accessory hemiazygos vein (figure 3).