Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Low lung volumes with bibasilar atelectasis , left greater than right . No additional focal opacity , pneumothorax , pleural effusion or pulmonary edema . Heart size , mediastinal contour and hila are normal given the low lung volumes . No bony abnormality .
    OUTPUT:
    
Low lung volumes with bibasilar atelectasis , left greater than right .