From: Surgical anatomy of the internal thoracic lymph nodes in fresh human cadavers: basis for sentinel node biopsy
Hemithorax
Intercostal space
Right
Left
Second (26)a
0.8 (23/26)
1.1 (29/26)
Third (29)
1.2 (37/29)
1.2 (36/29)
Fourth (27)b
0.7 (19/27)