Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since the prior radiograph performed 1 hour earlier , there has been interval placement of a chest tube in the right lung base . The previously noted pneumothorax is no longer appreciated . No pneumothorax on the left . There has otherwise been no significant interval change . The upper lungs appear hyperlucent , related to severe underlying emphysema as demonstrated on the recent CT chest .
    OUTPUT:
    
Interval placement of a right - sided chest tube . No evidence of pneumothorax on the current study .