Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . There are increasing interstitial and perihilar opacities suggesting mild pulmonary edema . Opacities at the left base likely reflect atelectasis . The heart is mildly enlarged and the pulmonary artery appears enlarged . There is no large pleural effusion or pneumothorax .
    OUTPUT:
    
Mild cardiomegaly and mild pulmonary edema .