Table 1 Comparison of non-pathologic lymph nodes (npLN) and lymph node metastases (mLN) with regard to the lymph node levels
Lymph node region | npLN | mLN | ||
|---|---|---|---|---|
N = | % | N = | % | |
Axillary level I | 1266 | 69.3% | 186 | 57.1% |
Axillary level II | 191 | 10.5% | 35 | 10.7% |
Axillary level III | 20 | 1.1% | 36 | 11.0% |
Level IV | 266 | 14.6% | 31 | 9.5% |
Internal mammary | 51 | 2.8% | 27 | 8.3% |
Other | 33 | 1.8% | 11 | 3.4% |
Total | 1827 | 100.0% | 326 | 100.0% |