Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is borderline enlarged . Aortic knob is calcified . Low lung volumes cause crowding of the bronchovascular structures . There is no overt pulmonary edema . Minimal atelectatic changes are noted in the lung bases , without focal consolidation . No pleural effusion or pneumothorax is seen .
    OUTPUT:
    
Low lung volumes with mild bibasilar atelectasis .