Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are low . The heart is normal in size . The aortic arch is partly calcified . The mediastinal and hilar contours appear unchanged . Streaky linear opacity projecting over the left mid lung suggests minor atelectasis or scarring that is unchanged . There are no pleural effusions . No pneumothorax is identified . No rib fracture is identified in this single limited view . Mild - to - moderate rightward convex curvature is again centered along the lower thoracic spine .
    OUTPUT:
    
No radiographic evidence of injury .