Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours appear stable . Areas of pre-existing scarring , again most prominent in the right upper and left mid lungs , appear stable . Aeration at the left lung base has improved somewhat , however . There is no pleural effusion or pneumothorax . The heart is enlarged . The aorta is tortuous and calcified . The cardiac , mediastinal and hilar contours appear stable .
    OUTPUT:
    
Stable multifocal areas of scarring . No evidence of acute cardiopulmonary disease .