Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Severe cardiomegaly is unchanged . The mediastinal contour appears stable , with calcification of the aorta again noted . Mild pulmonary edema appears similar compared to the prior study . There are likely small bilateral pleural effusions . Patchy bibasilar opacities likely reflect atelectasis . No pneumothorax is seen . There are moderate multilevel degenerative changes within the thoracic spine .
    OUTPUT:
    
Mild congestive heart failure with probable trace bilateral pleural effusions .