Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded . Scattered pulmonary calcifications are unchanged and likely represent prior granulomatous infection . No focal opacities are noted . Cardiomediastinal and hilar contours are unremarkable . Blunting of the aortopulmonary window is unchanged from prior exam and may be related to positioning . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
No evidence of acute cardiopulmonary process .