Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded and clear . Cardiomediastinal and hilar contours are unremarkable . The aorta is tortuous . Atherosclerotic calcifications are seen in the aortic arch . There is no pleural effusion or pneumothorax . No fracture is identified .
    OUTPUT:
    
Unremarkable chest radiographic examination .