Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette is moderately enlarged and has increased since the prior study . This is most likely due to cardiac enlargement although pericardial effusion could have a similar appearance . Pulmonary vascular redistribution is accompanied by mild edema . No pleural effusion or pneumothorax is identified . There is no free air under the diaphragm . Osseous structures are grossly intact .
    OUTPUT:
    
Cardiomegaly and pulmonary edema .