Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Two frontal images of the chest demonstrate ET tube in position with the tip 1 .3 cm above the carina . There is no pneumothorax or complications seen . The lungs are well expanded . Again seen is a large left perihilar mass , which is unchanged . There are no pleural effusions . There is significant scoliosis of the thoracolumbar spine .
    OUTPUT:
    
ET tube in good position . Otherwise , unchanged chest radiograph .