Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left - sided dual - chamber pacemaker device is noted with leads terminating in the right atrium and right ventricle . The heart is mildly enlarged . Dense mitral annular calcifications are present . Vascular stent projecting over the midline heart may reflect a CoreValve bioprosthesis . Aortic knob is calcified . The pulmonary vascularity is not engorged . The hilar contours are normal . There is no focal consolidation . No pleural effusion or pneumothorax is present . Mild biapical scarring is present . No acute osseous abnormalities are visualized . A few clips are seen projecting over the left chest inferiorly .
    OUTPUT:
    
No acute cardiopulmonary process .