Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since the prior chest x-ray of ___ , there has been reduction in the degree of the right pneumothorax . Small apical pneumothorax does , however , persist . Some reexpansion of the right upper lobe is seen . Opacifications in the left lung are unaltered .
    OUTPUT:
    
Decrease in size of right pneumothorax . Some reexpansion of right upper lobe .