Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable chest radiograph again demonstrates the right perihilar mass with no increase in volume in the right upper lobe . There is interval increased atelectasis in the right middle lobe and continued elevation of the right hemidiaphragm . Left lung is clear and the cardiac contour is unchanged .
    OUTPUT:
    
No interval change status post stent placement .