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| Parameters | Positive | Negative | χ2 | P | ||
| n | % | n | % | |||
| Mortality | ||||||
| Control invasive surgery group | 8 | 44,44 | 10 | 55,56 | 7,058 | 0,008 |
| Study bronchoscopic approach group | 1 | 5,56 | 17 | 94,44 | ||
| Two-years survival | ||||||
| Control invasive surgery group | 7 | 70,00 | 3 | 30,00 | 0,132 | 0.716 |
| Study | 13 | 76,47 | 4 | 23,53 | ||
