Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Persistent right greater than left basilar opacities are noted . Superiorly , the lungs are clear . Right chest wall port is stable in position . Cardiomediastinal silhouette is also stable . No acute osseous abnormalities . Biliary catheter again projects over the upper abdomen .
    OUTPUT:
    
Persistent right greater than left basilar opacities , potentially atelectasis in the setting of low lung volumes . Infection or aspiration are not excluded .