Uberon definition : The accessory hemiazygos vein (vena azygos minor superior) is a vein on the left side
of the vertebral column that generally drains the fifth through eighth intercostal
spaces on the left side of the body[WP].;
The accessory hemiazygos vein (vena azygos minor superior) is a vein on the left side
of the vertebral column that generally drains the fifth through eighth intercostal
spaces on the left side of the body[WP].