Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Small right apical pneumothorax has decreased . Extensive subcutaneous emphysema in the right neck and chest wall has also minimally decreased . Small layering right pleural fluid unchanged . Lungs grossly clear . Heart size normal . Right pigtail pleural drainage catheter unchanged in position . New endobronchial valves in the right upper lobe segmental bronchi .
    OUTPUT:
    
Interval decrease in small right pneumothorax . New endobronchial valves in the segmental bronchi of the right upper lobe .