Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Hyperinflation of the lungs and interstitial prominence consistent with emphysema . There is no mediastinal widening . The cardiomediastinal silhouette and hila are normal . There is no pleural effusion or pneumothorax . There is unchanged blunting of the right costophrenic angle , likely due to scarring or pleural thickening .
    OUTPUT:
    
1 . Hyperinflation of the lungs likely due to emphysema . 2 . No mediastinal widening .