Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A single - lead pacemaker device terminates in the right ventricle . A transcutaneous pacer device is also present . The patient is status post mitral valve replacement and sternotomy . The heart appears mildly enlarged . The main pulmonary artery contour is also mildly prominent . There is no pleural effusion or pneumothorax . The lungs appear clear .
    OUTPUT:
    
Status post placement of pacer device and mitral valve replacement . No evidence of acute cardiopulmonary disease .