Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright view of the chest . A small chest tube projects over the right lower lung . There is persistent right pneumothorax , small without shift . Emphysema is significant . Cardiomediastinal silhouette is unremarkable . No acute bony injury . Chronic appearing right clavicular deformity noted .
    OUTPUT:
    
Small right pneumothorax despite presence of a right chest tube . Severe emphysema .