Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is marked hyperinflation of the lungs , without focal consolidation or pneumothorax . The cardiac silhouette is normal in size , the mediastinal contours are unremarkable . Note is made of calcification of the aortic knob , unchanged .
    OUTPUT:
    
1 . No pneumonia 2 . COPD .