Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes remain low , with chronic moderate elevation of the right hemidiaphragm . There is crowding of bronchovascular markings and bibasilar atelectasis , but no focal consolidation . No significant pleural effusions or pneumothorax . Note is made of colonic interposition .
    OUTPUT:
    
Low lung volumes , without acute process .