Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lungs are fully expanded and clear . No pleural abnormalities . Heart size is normal . The ascending thoracic aorta appears somewhat prominent , likely due to tortuosity or dilation .
    OUTPUT:
    
1 . Prominence of the ascending thoracic aorta may be due to tortuosity or mild dilation . 2 . No traumatic abnormality .