Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Endotracheal tube is seen with tip in the right mainstem bronchus . Hazy right basilar opacity may be due to atelectasis . Left lung is grossly clear . The cardiomediastinal silhouette is within normal limits . No acute osseous abnormalities . Thoracolumbar S - shaped scoliosis is noted .
    OUTPUT:
    
Right mainstem intubation .