Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is mildly enlarged . The aorta is moderately tortuous . Otherwise , mediastinal and hilar contours are unremarkable . Linear opacity in the lingula is most consistent with minor scarring . Otherwise , the lungs appear clear . There are no pleural effusions or pneumothorax .
    OUTPUT:
    
No evidence of acute cardiopulmonary disease .