Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: An endotracheal tube has been advanced . It now terminates about 6 .5 cm above the carina . The cardiac , mediastinal and hilar contours appear stable . There is persistent volume loss with partial collapse of the right upper lobe , but with some degree of re-expansion since the recent prior examination . The left lung remains clear . There is no definite pleural effusion or pneumothorax .
    OUTPUT:
    
Status post advancement of endotracheal tube , which however is still 6 .5 cm above the carina . Mild improvement in the extent of right upper lobe collapse .