Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is patchy bibasilar opacity , greater on the left than on the right . Superiorly , the lungs are clear . The cardiomediastinal silhouette is within normal limits . No acute osseous abnormalities identified .
    OUTPUT:
    
Bibasilar opacities left greater than right , potentially atelectasis , although they could represent pneumonia in the proper clinical setting .