Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . There is massive hyperinflation of both lungs with large bullae present within lower lungs , right more than the left . There is no sign of pneumothorax , or definite signs of pneumonia . Blunting of the CP angles bilaterally on the lateral projection could reflect the massive hyperinflation though the possibility of effusion is also raised . Cardiomediastinal silhouette appears tubular though this is expected due to the significant degree of underlying emphysema / COPD . Bony structures appear intact .
    OUTPUT:
    
Severe bullous emphysema . Possible small bilateral effusions . No evidence of superimposed pneumonia .