Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The ET tube is in the right mainstem bronchus . The NG tube passes into the expected area of the stomach . The lungs well expanded and clear . There is no pleural effusion or pneumothorax . The cardiomediastinal silhouette is unremarkable .
    OUTPUT:
    
ET tube in the right mainstem bronchus .