Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Bibasilar opacities with volume loss likely reflect atelectasis , though a component of pneumonia is difficult to exclude . No pleural effusion or pneumothorax . Cardiomediastinal silhouette is normal . Imaged osseous structures are intact . No free air below the right hemidiaphragm is seen .
    OUTPUT:
    
Bibasilar opacities likely atelectasis , difficult to exclude a component of pneumonia .