Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Faint bibasal atelectasis noted . No convincing evidence for pneumonia or edema . Cardiomediastinal silhouette is normal . In particular , the mediastinum appears normal in caliber . Several chronic right rib cage deformities are again noted . No acute bony abnormality is seen . No free air below the right hemidiaphragm .
    OUTPUT:
    
No acute findings . Normal mediastinal contour .