Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Low lung volumes are noted . Bibasilar opacities are likely secondary to atelectasis . Superiorly , the lungs are clear . Cardiomediastinal silhouette is within normal limits for technique . No acute osseous abnormalities . There is no free intraperitoneal air .
    OUTPUT:
    
Low lung volumes without definite acute cardiopulmonary process .