Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are low . The heart is normal in size . The mediastinal and hilar contours appear within normal limits . There is no pleural effusion or pneumothorax . Allowing for low lung volumes , vague lower lung opacities are probably due to minor atelectasis . The right shoulder is not fully imaged , but there is an indication that the acromion may be depressed with respect to the right clavicle , although the appearance may be essentially a projectional artifact . Bony structures are otherwise unremarkable .
    OUTPUT:
    
No evidence of acute disease or chest injury . Mild apparent relative depression of the right acromion with respect to the distal right clavicle ; if pain refers to the site and there is a clinical possibility of shoulder separation , then dedicated radiographic assessment could be considered .