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| Distant metastasis (n = 27) | No distant metastasis (n = 184) | RR (IC 95%) | p-value | |
|---|---|---|---|---|
| Clinical N1 | 87.5% | 71.4% | 1.19 (0.99-1.5) | 0.06 |
| Vascular invasion by the primary tumor | 50% | 28.2% | 1.83 (1.19-2.82) | 0.04 |
| > 3 cm metastatic lymph nodes | 22% | 19.5% | 1.13 (0.52-2.4) | 0.7 |
| Extra nodal extension | 12% | 9.1% | 1.2 (0.39-4.07) | 0.7 |
| > 5 metastatic lymph nodes | 59% | 44.5% | 1.3 (0.93-1.8) | 0.1 |
| N1b | 70.4% | 52.1% | 1.3 (1.01-1.78) | 0.03 |
