Internal mammary vein

Internal thoracic vein
Veins of the thorax and abdomen. The internal thoracic veins drain into the brachiocephalic veins.]
Posterior surface of sternum and costal cartilages, showing Transversus thoracis. (Internal mammary vessels labeled at center top.)
Details
Source	superior epigastric vein
Drains to	brachiocephalic vein
Artery	internal thoracic artery
Identifiers
Latin	vena thoracica interna
Dorlands /Elsevier	v_05/12852014
TA	A12.3.04.018
FMA	70835
Anatomical terminology []

In human anatomy, the internal thoracic vein (previously known as the internal mammary vein) is a vessel that drains the chest wall and breasts.

Bilaterally, it arises from the superior epigastric vein, accompanies the internal thoracic artery along its course and terminates in the brachiocephalic vein.

Transverse section of thorax, showing relations of pulmonary artery.