Table 3 Number and type of metastases in sentinel node and risk of metastases in non-sentinel node
SN | Category | Total (n) | Negative Non-SN (n) | Positive Non-SN (n) | Positive Non-SN (%) | OR (95% CI) | ORa (95% CI) |
|---|---|---|---|---|---|---|---|
SN removed (n) | 1 | 118 | 84 | 34 | 28.8 | 1.00 | 1.00 |
2 | 208 | 125 | 83 | 39.9 | 1.64 (1.01–2.66) | 1.34 (0.77–2.31) | |
3 | 166 | 110 | 56 | 33.7 | 1.26 (0.75–2.10) | 1.08 (0.61–1.93) | |
4 | 83 | 56 | 27 | 32.5 | 1.19 (0.65–2.19) | 0.96 (0.48–1.90) | |
≥5 | 25 | 15 | 10 | 40.0 | 1.65 (0.67–4.03) | 1.71 (0.65–4.53) | |
Unknown | 2 | 1 | 1 | – | – | – | |
Total | 602 | 391 | 211 | ||||
Type of metastases in SNb | Micro | 186 | 159 | 27 | 14.5 | 1.00 | 1.00 |
Macro | 414 | 232 | 182 | 43.9 | 4.62 (2.94–7.26) | 4.91 (3.01–8.05) | |
Unknown | 2 | 0 | 2 | – | – | – | |
Total | 602 | 391 | 211 |