azygous venous system (anatomy)

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The azygous system of veins constitute the:

  • azygous vein on the right side
  • hemiazygous system on the left side:
    • hemizaygous vein
    • accessory hemiazygous vein

The group drain the:

  • back
  • posterolateral thoracic cage
  • posterolateral abdomen in the lumbar region

Last reviewed 01/2018