From: Surgical anatomy of the internal thoracic lymph nodes in fresh human cadavers: basis for sentinel node biopsy
Hemithorax
Retrocostal space
Right n (%)
Left n (%)
Second (17)a
0.3 (5/17)
0.2 (3/17)
Third (19)
0.3 (7/19)
Fourth (19)
0.0 (1/19)
0.1 (2/19)