Table 3.
Results of sentinel node analysis in Mastectomy
| Parameter | Histology n = 10,097 | % | OSNA n = 375 | % | P-value |
|---|---|---|---|---|---|
| Macrometastasis | 1927 | 19.1 | 65 | 17.3 | 0.396 |
| Micrometastasis | 1048 | 10.4 | 58 | 15.5 | 0.002 |
| Axillary therapy* | 0.591 | ||||
| Yes | 1828 | 18.11 | 75 | 20.00 | |
| No | 8264 | 81.8 | 300 | 80.0 | |
| Unknown | 5 | 0.05 | 0 | 0.0 | |
| Axillary lymph node dissection | 445 | 4.4 | 56 | 14.9 | < 0.001 |
| Axillary radiotherapy | < 0.001 | ||||
| Yes | 1383 | 13.7 | 19 | 5.1 | |
| No | 8709 | 86.3 | 356 | 94.9 | |
| Unknown | 5 | 0.05 | 0 | 0.0 | |
| Chemotherapy** | 2471 | 24.5 | 96 | 25.6 | 0.618 |
| Endocrine therapy | 6194 | 61.3 | 211 | 56.3 | 0.048 |
| Chemotherapy and endocrine therapy | 1900 | 18.8 | 66 | 17.6 | 0.553 |
| cT stage | 0.188 | ||||
| T1a/b | 1539 | 15.2 | 61 | 16.3 | |
| T1c | 3826 | 37.9 | 150 | 40.0 | |
| T2 | 3931 | 38.9 | 130 | 34.7 | |
| T3 | 598 | 5.9 | 21 | 5.6 | |
| Tx | 203 | 2.0 | 13 | 3.5 |
Significant differences are bold
*Axillary lymph node dissection or axillary radiotherapy
**Chemotherapy with or without (targeted) immunotherapy. Statistical analysis was performed using Pearson Chi-square test