Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are low lung volumes . The heart size is normal . The aorta remains slightly tortuous with vascular calcifications noted . There is crowding of the bronchovascular structures , but no overt pulmonary edema is present . Patchy opacities in the lower lobes may reflect areas of developing infection or atelectasis . No pleural effusion or pneumothorax is present . There are multilevel degenerative changes of the thoracic spine . Multiple clips are again noted within the left axilla . Degenerative changes of both acromioclavicular joints are noted . Old right - sided rib deformities are visualized .
    OUTPUT:
    
Low lung volumes with mild patchy opacities in the lung bases . This could reflect atelectasis , but infection can not be completely excluded .