Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette is markedly enlarged , increased from prior ; underlying cardiomyopathy or pericardial effusion may be present . The aorta is calcified , indicating atherosclerosis . The mediastinal and hilar contours are normal . Low lung volumes . The pulmonary vasculature is normal . There is bibasilar atelectasis . No pleural effusion or pneumothorax is seen . Multilevel degenerative changes of the visualized spine .
    OUTPUT:
    
Marked cardiomegaly , increased from prior , underlying cardiomyopathy or pericardial effusion may be present . No definite evidence of pulmonary edema , as clinically questioned .