Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are low lung volumes , resulting in some bronchovascular crowding and mild bibasilar atelectasis . Otherwise , no focal consolidation is identified . Cardiomediastinal and hilar contours are unremarkable . Some calcifications of the aortic knob are present . There is no pleural effusion or pneumothorax . An orogastric tube is seen with both the side port and tip below the gastroesophageal junction . Moderate to severe degenerative changes are noted within the thoracic spine .
    OUTPUT:
    
Low lung volumes with mild bibasilar atelectasis .