Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a new chest tube in place , terminating along the lateral right upper hemithorax . Coinciding with placement there has been marked decrease in a right - sided pneumothorax , which is now small . There may be trace fluid effacing the right costophrenic sulcus . The lungs appear clear . The cardiac , mediastinal and hilar contours appear stable .
    OUTPUT:
    
Status post right - sided chest tube placement with marked decrease in pneumothorax .