Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . The aorta remains tortuous and calcified at the aortic arch . Mediastinal and hilar contours are unchanged . Pulmonary vasculature is not engorged . Lungs are hyperinflated . Minimal streaky opacities in the lung bases likely reflect areas of atelectasis . No focal consolidation , pleural effusion or pneumothorax is present . There are mild degenerative changes noted in the thoracic spine .
    OUTPUT:
    
Minimal streaky opacities in the lung bases , likely atelectasis .