Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Severe enlargement of the cardiac silhouette is re - demonstrated . The mediastinal contour is unchanged . There is mild pulmonary edema with upper zone vascular redistribution without large pleural effusions . No pneumothorax is present . Streaky and patchy bibasilar airspace opacities likely reflect areas of atelectasis . There are multilevel moderate degenerative changes in the thoracic spine .
    OUTPUT:
    
Severe cardiomegaly with mild pulmonary edema and bibasilar atelectasis .