Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are bibasilar opacities , more confluent on the right than on the left which are new since ___ but perhaps mildly improved since ___ . Superiorly the lungs are clear . The cardiomediastinal silhouette is within normal limits . Right chest wall dual lead pacing device is again noted . No acute osseous abnormalities .
    OUTPUT:
    
Persistent bibasilar opacities , right greater than left compatible with infection or aspiration .