Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The right lower lung has collapsed since the prior radiograph . Otherwise the cardiomediastinal silhouetteis unremarkable . There is no clear pleural effusion or pneumothorax . The lungs are otherwise clear . There is a left subclavian terminating at the lower SVC . A right chest tube is seen terminating at the right upper midlung . An ET tube is seen terminating 3 .5 cm above the carina .
    OUTPUT:
    
Right lower lung collapse since the prior radiograph