From: Surgical anatomy of the internal thoracic lymph nodes in fresh human cadavers: basis for sentinel node biopsy
Hemithorax
Right n (%)
Left n (%)
Second (26)a
18 (69.2)
19 (73.6)
Third (29)
25 (86.2)
22 (75.8)
Fourth (27)b
13 (48.1)
9 (33.3)