Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded and clear . Apparent widening of the vascular pedicle is secondary to a tortuous and unfolded aorta , better assessed in the lateral view . Otherwise , the cardiomediastinal and hilar contours are unremarkable . Heart size is normal . There is no pleural effusion or pneumothorax . No rib fractures are identified . No subdiaphragmatic free air is present .
    OUTPUT:
    
No evidence of acute cardiopulmonary process . No subdiaphragmatic free air .