Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . Previously reported widening of the mediastinum has improved , likely due to a tortuous thoracic aorta accentuated by patient rotation . Heart size is normal . Lungs are clear . No focal consolidation , pleural effusion , or pneumothorax is seen . There are no acute osseous abnormalities .
    OUTPUT:
    
Decrease in extent of mediastinal widening , likely due to accentuation of the tortuous aorta by patient rotation . No definite signs of mediastinal hematoma . However , if there is clinical suspicion for aortic injury , CTA of the chest would be recommended .