Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left - sided pacemaker device is noted with leads terminating in the right atrium , right ventricle , and region of the coronary sinus . Heart size remains unchanged , and mildly enlarged . The mediastinal and hilar contours are stable , with calcification of the aortic notch . The lungs are clear . No pleural effusion or pneumothorax . Several surgical anchors are noted in the right humeral head .
    OUTPUT:
    
No acute cardiopulmonary abnormality .