Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest . The lungs remain clear . The cardiomediastinal silhouette is within normal limits . No acute osseous abnormalities identified . Of note , the lateral view has lower lung volumes with bibasilar opacities that are likely due to atelectasis .
    OUTPUT:
    
No definite acute cardiopulmonary process .