Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are normal . Hyperinflation of both lungs , consistent with COPD , is noted . There are no pleural effusions or pneumothorax . Again seen are biapical pleural parenchymal scarring . Mild prominence of the interstitium is seen bilaterally suggests chronic interstitial abnormality .
    OUTPUT:
    
Emphysema . No evidence of pneumonia .