Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are decreased , leading to crowding of the bronchovascular structures . Linear , bibasilar atelectasis is seen . Otherwise , there is no focal consolidation , pleural effusion , pneumothorax , or pulmonary edema . The cardiomediastinal silhouette are unchanged in appearance . Calcifications are noted at the aortic arch . No free air is seen beneath the right hemidiaphragm .
    OUTPUT:
    
Low lung volumes with bibasilar atelectasis . No free intraperitoneal air .