Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy and CABG . Lung volumes are low which accentuates the size of the cardiac silhouette which remains mildly enlarged . Mediastinal and hilar contours are unchanged . There is crowding of the bronchovascular structures due to low lung volumes without overt pulmonary edema . Innumerable basilar predominant nodular opacities are less pronounced on the current study but compatible with known metastases . Patchy opacities are re - demonstrated in the lung bases likely reflective of atelectasis . No new focal consolidation , pleural effusion or pneumothorax is demonstrated . Multilevel degenerative changes are again noted in the thoracic spine .
    OUTPUT:
    
Innumerable pulmonary metastases are less pronounced on the current study . Bibasilar atelectasis .