Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well inflated . There is no consolidation . There is no pleural effusion . The mediastinum is normal . The heart size is borderline . A pacemaker is noted . . The patient has median sternotomy closures and mediastinal clips consistent with coronary artery bypass graft .
    OUTPUT:
    
Postoperative change . No acute disease .