Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear . The right hilum is normal . The left hilum demonstrates enlarged left pulmonary artery that is unchanged from prior . There is chronic unchanged moderate to severe cardiomegaly . No pleural effusion . No pneumothorax . No fractures . The pacer defibrillator leads are unchanged , terminating in the right atrium and right ventricle .
    OUTPUT:
    
Stable chest radiograph with stable , long - term chronic moderate to severe cardiomegaly and enlarged left pulmonary artery .