| 
      
        |  | Partial    radiological response (n=20) | Progressive and no    change (n=20) | P-value |  
        | CYFRA 21-1(ng/ml) |  
        | Pre-treatment    level | 18.99    ± 44.87 | 19.97    ± 23.57 | 0.86 |  
        | Post-treatment    level | 15.53    ± 49.66 | 26.24    ± 33.19 | 0.43 |  
        | CEA (ng/ml) |  
        | Pre-treatment    level | 32.23    ± 67.86 | 72.31    ± 119.74 | 0.20 |  
        | Post-treatment    level | 15.00    ± 40.04 | 89.04    ± 145.84 | 0.035* |  |