Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded and show bilateral interstitial multifocal airspace opacities . The cardiac silhouette is moderately enlarged . The mediastinal silhouette and hilar contours are normal . No pleural effusion or pneumothorax is present . A left - sided pacer terminates with its leads in the right atrium and right ventricle . A right - sided dialysis catheter terminates in the right atrium .
    OUTPUT:
    
Massive cardiomegaly . Mild edema .