Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is mildly enlarged . There is mild unfolding of the thoracic aorta . Patchy calcification is noted along the aortic arch . There is no pleural effusion or pneumothorax . The lungs appear clear . There is no evidence for fracture . Mild degenerative changes are noted along the thoracic spine .
    OUTPUT:
    
No evidence of injury . Status post anterior lower cervical fusion .