Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is moderately enlarged with tortuosity of the thoracic aorta . Hilar contours are unremarkable . There is mild bibasilar atelectasis . Lungs are otherwise clear . Pleural surfaces are clear without effusion or pneumothorax .
    OUTPUT:
    
No acute cardiopulmonary abnormality .