Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is mild - to - moderate enlargement of the cardiac silhouette . The aorta is mildly ectatic . There is mild fullness of the hila , and mild perihilar and bibasilar hazy opacities are most suggestive of mild pulmonary edema . No pleural effusion or pneumothorax is present . There are multilevel degenerative changes in the thoracic spine .
    OUTPUT:
    
Probable mild pulmonary edema , though , an atypical infection can not be excluded .