Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were obtained . Bibasilar atelectatic changes are again noted in the lower lungs . No large effusion or pneumothorax . No definite signs of pneumonia . Cardiomediastinal silhouette is stable . Bony structures are intact . No free air below the right hemidiaphragm .
    OUTPUT:
    
Bibasilar atelectasis . Otherwise , unremarkable .