| BCS or Mastectomy + SNB (SN−) | BCS or Mastectomy + SNB → ALND | BCS or Mastectomy + SNB (SN+) | BCS or Mastectomy + ALND |
Number of the patients | 565 | 81 | 18 | 94 |
Median age | 56.1 | 53.6 | 56.2 | 59.5 |
Median invasion size | 14.5 | 17.2 | 26.8 | 31.0 |
Median number of axillary lymph node metastasis | 0 | 1.9 |
| 6.8 |
Median number of SN metastasis | 1.4 | 1.8 | 1.8 |
|
Median number of non-SN metastasis |
| 0.8 |
|
|
Median number of non SN removed |
| 10.4 |
|
|
Median number of SN and non SN removed |
| 12.2 |
| 16.8 |