Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left - sided dual - chamber pacemaker device with leads terminating in the right atrium and right ventricle are in unchanged positions . Heart size is borderline enlarged . Mediastinal and hilar contours are normal . Pulmonary vasculature is normal . Lungs are clear . No pleural effusion or pneumothorax is present . No acute osseous abnormality is visualized .
    OUTPUT:
    
No acute cardiopulmonary abnormality .