Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest are obtained . There is mild bibasilar atelectasis . No definite signs of pneumonia or CHF . No pleural effusion or pneumothorax is seen . Cardiomediastinal silhouette is normal . No free air below the right hemidiaphragm . Imaged osseous structures are intact .
    OUTPUT:
    
Mild bibasilar atelectasis . No definite signs of pneumonia .