Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are low in volume but clear . The cardiac silhouette is enlarged . The mediastinal silhouette and hilar contours are normal . No pleural effusion or pneumothorax is present . A left - sided pacer terminates with its leads in the right atrium and right ventricle . The patient is status post CABG . Note is made of small bilateral calcified pleural plaques and right sided pleural thickening , unchanged .
    OUTPUT:
    
No acute intrathoracic process .