Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left - sided dual - chamber pacemaker is noted with leads terminating in the right atrium and right ventricle . Moderate cardiomegaly is unchanged , and the mediastinal and hilar contours are stable . The lungs are clear . No pleural effusion or pneumothorax is present . The pulmonary vascularity is not engorged . No acute osseous abnormalities are visualized .
    OUTPUT:
    
No acute cardiopulmonary process .