accessory vein accessory vein accessory vein may refer to: accessory cephalic vein, a vein that passes along the radial border of the forearm accessory hemiazygos vein, a vein on the left side of the vertebral column accessory portal vein anterior accessory saphenous vein, a special anterior tributary of the great saphenous vein this article is issued from wikipedia. the text is licensed under creative commons - attribution - sharealike. additional terms may apply for the media files.