Table 4.
OS and DFS in patients with different tumor size and method of lymphadenectomy
| Tumor size | Methods of lymphadenectomy | Cases (n) | OS (%) | P value | DFS (%) | P value | ||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 year | 3 year | 5 year | 1 year | 3 year | 5 year | |||||
| >2 cm | LA | 28 | 96.4 | 85.3 | 81.6 | 0.041 | 92.7 | 81.6 | 77.9 | 0.038 |
| LS | 43 | 90.7 | 72.1 | 55.8 | 90.6 | 57.2 | 52.5 | |||
| ≤2 cm | LA | 14 | 92.9 | 85.7 | 77.9 | 0.977 | 85.7 | 78.6 | 70.7 | 0.992 |
| LS | 20 | 95.0 | 79.4 | 73.7 | 90.0 | 80.0 | 74.7 | |||
OS overall survival, DFS disease-free survival, LA radical systematic mediastinal lymphadenectomy, LS lymph node sampling