Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single view upright portable view of the chest was obtained . The patient is status post median sternotomy and CABG . Minimal bibasilar atelectasis is seen . No focal consolidation , pleural effusion , or pneumothorax . The cardiac silhouette is top normal . The aorta is calcified and tortuous . No overt pulmonary edema is seen .
    OUTPUT:
    
No acute cardiopulmonary process .