Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are hyperinflated and the diaphragms are flattened , consistent with COPD . There are mild interstitial opacities predominantly in the upper lobe . Also noted are confluent opacities in both lower lobes . The cardiac silhouette is enlarged . There is cardiomegalywith possible hilar prominence . Minimal blunting of the posterior costophrenic angles . No definite pleural effusions are present . Left - sided pacer leads terminate approrpiately in the right atrium and right ventricle .
    OUTPUT:
    
Mild interstitial edema with overlying confluent opacities in both lower lobes that could represent atelectasis or pneumonia .