Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded and clear . The cardiomediastinal silhouette , hilar contours , and pleural surfaces are normal . No pleural effusion or pneumothorax is present . An ET tube terminates 4 .5 cm above the carina . An NG tube terminates with its tip at the gastroesophageal junction . This should be advanced by at least 8 cm for optimal position .
    OUTPUT:
    
Please advance NG tube by 8 cm for optimal position . These findings were communicated to the referring physician , ___ . ___ , ___ telephone at 11 :50 p .m . on ___ .