Variable | No. patients | Overall survival | P | Disease-free survival | P | |||
---|---|---|---|---|---|---|---|---|
Surgery only (n=90) | Adjuvant CT/RT (n=52) | Surgery only | Adjuvant CT/RT | Surgery only | Surgery CT/RT | |||
Lymphatic Vessel Invasion | ||||||||
Yes | 39 | 20 | 43.1% | 65.8% | 0.198 | 39.5% | 41.7% | 0.567 |
No | 51 | 32 | 62.3% | 76.8% | 0.458 | 61.6% | 68.8% | 0.735 |
Perineural Invasion | ||||||||
Yes | 47 | 20 | 43.7% | 62.9% | 0.470 | 40.7% | 42.8% | 0.787 |
No | 43 | 32 | 64.0% | 79.2% | 0.222 | 63.1% | 71.7% | 0.603 |
Extended resection | ||||||||
Yes | 18 | 8 | 33.3% | 45.0% | 0.546 | 33.3% | 37.5% | 0.951 |
No | 72 | 44 | 59.0% | 76.2% | 0.219 | 58.5% | 63.4% | 0.486 |
Lymph node metastases | ||||||||
Yes | 55 | 46 | 40.6% | 68.2% | 0.023 | 40.6% | 53.7% | 0.113 |
No | 35 | 6 | 73.4% | 100.0% | 0.736 | 73.4% | 50.0% | 0.716 |
T-category | ||||||||
T1 | 4 | 7 | 75.0% | 66.7% | 0.627 | 75.0% | 66.7% | 0.627 |
T2 | 21 | 8 | 70.6% | 100.0% | 0.096 | 70.6% | 71.4% | 0.629 |
T3 | 5 | 6 | 25.0% | 85.7% | 0.081 | 25.0% | 83.3% | 0.170 |
T4a | 55 | 30 | 51.3% | 62.0% | 0.875 | 50.1% | 52.4% | 0.999 |
T4b | 5 | 1 | 20.0% | 100.0% | 0.259 | 20.0% | 0.0% | 0.953 |
N-category | ||||||||
N0 | 35 | 5 | 73.4% | 100.0% | 0.736 | 72.4% | 100.0% | 0.689 |
N1 | 14 | 10 | 50.0% | 80.0% | 0.203 | 50.0% | 52.5% | 0.674 |
N2 | 22 | 20 | 46.5% | 73.1% | 0.140 | 45.0% | 64.3% | 0.279 |
N3a | 14 | 15 | 32.7% | 58.7% | 0.340 | 32.7% | 41.7% | 0.439 |
N3b | 5 | 2 | 16.7% | 0.0% | 0.758 | 16.7% | 0.0% | 0.919 |
N-category – N-ratio | ||||||||
N0 – NR0 | 35 | 5 | 73.4% | 100.0% | 0.736 | 72.4% | 100.0% | 0.689 |
N1 – NR1a | 5 | 5 | 80.0% | 75.0% | 0.688 | 80.0% | 75.0% | 0.688 |
N1 – NR1b | 9 | 5 | 37.5% | 83.3% | 0.106 | 37.5% | 40.0% | 0.553 |
N2 – NR1 | 8 | 7 | 75.0% | 83.3% | 0.620 | 75.0% | 85.7% | 0.656 |
N2 – NR2 and NR3 | 14 | 13 | 27.8% | 67.7% | 0.120 | 26.8% | 53.8% | 0.251 |
N3a – NR2 and NR3 | 14 | 15 | 32.7% | 58.7% | 0.340 | 32.7% | 41.7% | 0.439 |
N3b – NR3 | 5 | 2 | 16.7% | 0.0% | 0.758 | 16.7% | 0.0% | 0.919 |