Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Moderate enlargement of cardiac silhouette is re - demonstrated . The aorta remains mildly tortuous . There is mild pulmonary edema with patchy opacities in the lung bases likely reflective of atelectasis . No pleural effusion or pneumothorax is seen . Multilevel moderate degenerative changes are noted in the thoracic spine . Clips from prior cholecystectomy are seen within the upper abdomen .
    OUTPUT:
    
Mild pulmonary edema and bibasilar patchy opacities likely reflective of atelectasis .