Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest are compared to previous exam from ___ . There are bibasilar linear opacities , most suggestive of atelectasis . Superiorly , the lungs are clear . Cardiomediastinal silhouette is within normal limits . There is no displaced rib fracture or other visualized acute osseous abnormality .
    OUTPUT:
    
Linear bibasilar opacities suggestive of atelectasis . Clinical correlation is suggested to exclude possibility of pneumonia .