Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Left chest wall pacer device is seen with leads extending into the region of the right atrium and right ventricle . The heart is mildly enlarged . The mediastinal contour is normal . Lungs are clear without focal consolidation , large effusion or pneumothorax . No signs of congestion or edema . Bony structures are intact . No free air below the right hemidiaphragm .
    OUTPUT:
    
Top normal heart size with pacemaker in place .