Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Again noted is extensive subcutaneous air , similar to that seen previously . Pneumomediastinum appears relatively stable . Right apical pneumothorax is minimally smaller . Right middle lobe segmental collapse has increased in comparison to the prior study . There is now also increase opacification of the lingula .
    OUTPUT:
    
1 . Right apical pneumothorax is minimally smaller . Stable pneumomediastinum and subcutaneous air . 2 . New New lingular opacification which may represent atelectasis . Concurrent infectious process must be excluded in the proper clinical setting . 3 . Increased right middle lobe partial collapse .