Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to ___ , again seen is a small right upper zone pneumothorax --___ may be very slightly smaller . The right - sided chest tubes also again seen . The configuration of the tube is somewhat different --___ possible it this is accounted for by differences in patient positioning . Otherwise , the overall appearance is similar . There has been slight interval improvement in the previously seen retrocardiac opacity . Faint opacity at the right lung base , with obscuration of the right hemidiaphragm , question atelectasis , may be slightly worse .
    OUTPUT:
    
Right chest tube present . Small right upper zone pneumothorax persists , probably slightly smaller than on ___ . Bibasilar opacities improved on the left , possibly slightly worse on the right .