Internal thoracic vein

The internal thoracic vein (previously known as the internal mammary vein) arises from the superior epigastric vein. It drains the chest wall and breasts. 

Gross anatomy

The internal thoracic vein arises from the superior epigastric vein. It forms venae comitantes to the internal thoracic artery and accompanies it in its course, before uniting to form a single vein 1. After uniting, each internal thoracic vein drains into its respective brachiocephalic vein 2.

Article information

rID: 70605
System: Vascular
Section: Anatomy
Tag: cases, refs
Synonyms or Alternate Spellings:
  • Internal mammary vein

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