Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable chest radiograph was provided . Sternal closure devices are unchanged . Lung volumes are low . The bilateral interstitial opacities , likely representing pulmonary edema . Lung nodules are better visualized on the prior chest CT . There is no large focal consolidation , pleural effusion or pneumothorax . The cardiomediastinal silhouette is unchanged .
    OUTPUT:
    
Mild pulmonary edema .