Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear . There is no focal consolidation or pneumothorax . There is no vascular congestion or pleural effusions . The heart size is normal . The apparent enlargement of the aortic contour corresponds with tortuosity and unfolding of the aortic arch , seen on follow - up chest CT . The remaining mediastinal and hilar contours are within normal limits .
    OUTPUT:
    
1 . Clear lungs without consolidation or effusion . 2 . Widened contour of the thoracic aorta corresponds to tortuosity and unfolding of the aortic arch , better characterized on follow - up chest CT . Dr . ___ communicated concerns about an abnormal aortic contour to Dr . ___ at 5 :47 am on ___ by telephone .