Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours appear stable including mild cardiomegaly . The aorta is again tortuous . Streaky opacities in the lingula appear unchanged and most consistent with chronic scarring . Otherwise , the lungs remain clear . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
No evidence of acute cardiopulmonary disease .