Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Chest PA and lateral radiograph demonstrates unchanged cardiomediastinal contour with moderate cardiomegaly . Pacemaker leads are identified in the right atrium and the right and left ventricles as well as additional pacer external to the heart . Lungs are clear . No evidence of pulmonary edema . No pleural effusion or pneumothorax .
    OUTPUT:
    
No evidence of overt pulmonary edema . Stable cardiomegaly .