Table 2. Immediate postoperative systemic therapy according to the EGFR mutation status.
| Group | Unknown N = 77 |
Wild type N = 14 |
Mutant N = 43 |
All N = 134 |
|---|---|---|---|---|
| Main tumor resection | 45 | 9 | 33 | 87 |
| Observation only | 12 | 0 | 0 | 12 |
| Immediate systemic therapy | 27 | 7 | 33 | 67 |
| Chemotherapy | 27 | 7 | 24 | 58 |
| EGFR-TKI | 0 | 0 | 9 | 9 |
| Systemic therapy after recurrence | 6 | 2 | 0 | 8 |
| Chemotherapy | 6 | 0 | 0 | 6 |
| EGFR-TKI | 0 | 2 | 0 | 2 |
| Diagnostic thoracotomy or thoracoscopy | 32 | 5 | 10 | 47 |
| Observation only | 22 | 0 | 0 | 22 |
| Immediate systemic therapy | 10 | 5 | 10 | 25 |
| Chemotherapy | 10 | 3 | 2 | 15 |
| EGFR-TKI | 0 | 2 | 8 | 10 |