Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded and show new bilateral mild interstitial and focal airspace opacities . Calcified pleural plaques are noted , unchanged . A more confluent opacity in the left lower lobe is associated with a moderate effusion . The cardiac silhouette is enlarged . The mediastinal silhouette is unrermarkable for age . The hilar contours are prominent . A left - sided pacer terminates with its leads in the right atrium and right ventricle . Sternal wires are intact and changes secondary to a CABG are noted .
    OUTPUT:
    
Mild pulmonary edema . Left lower lobe opacity could represent atelectasis or pneumonia with associated effusion .