Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to the prior film , there has been improvement in the right upper zone pneumothorax . A small residual pneumothorax is likely present . There are improved inspiratory volumes , with near complete resolution of the opacities that were previously seen at the lung bases . No new focal opacity and no effusion is identified . The cardiomediastinal silhouette is improved . Heart size is at the upper limits of normal . Multiple fractures depicted on the ___ chest CT are less apparent radiographically . However , AC joint separation on the right is noted .
    OUTPUT:
    
1 . Decrease in size of right apical pneumothorax . 2 . Near complete resolution of bibasilar opacities , with improved inspiratory volumes . 3 . Right AC joint separation noted . Multiple known fractures not well depicted radiographically .