Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . Mediastinal and hilar contours are unchanged . The pulmonary vascularity is not engorged . The lungs are hyperinflated . Streaky opacities in lung bases most likely reflect atelectasis . No focal consolidation , pleural effusion or pneumothorax is present . There are mild degenerative changes in the thoracic spine . Remote right - sided rib fracture is noted .
    OUTPUT:
    
Minimal bibasilar atelectasis .