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 NG tube passes out of view below the diaphragm . An ET tube is 6 cm above the carina and could be advanced 2 - 3 cm for more secure seating .
    OUTPUT:
    
No acute intrathoracic process . ET tube is 6 cm above the carina and may be advanced by 2 - 3 cm . These findings were communicated via telephone to Dr . ___ at 3 a .m . on ___ .