Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low resulting in bronchovascular crowding . Linear opacities in the lung bases likely reflect atelectasis . There is no overt pulmonary edema . No large pleural effusions are identified . There is no confluent consolidation or pneumothorax . Calcifications of the aortic knob are again noted . Cardiomediastinal and hilar contours are within normal limits .
    OUTPUT:
    
Low lung volumes with bibasilar atelectasis