Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is severe cardiomegaly . The hilar and mediastinal contours appear to be stable . Note is made of mild pulmonary vascular congestion . The lung volumes are low . There is mild bibasilar atelectasis . There is no pleural effusion . There is no evidence of a pneumothorax . Multilevel degenerative changes are present in the thoracic spine .
    OUTPUT:
    
1 . Low lung volumes and mild bibasilar atelectasis . 2 . Severe cardiomegaly and mild pulmonary vascular congestion .