Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is persistent , severe pneumomediastinum and diffuse subcutaneous emphysema , minimally changed from the prior examination . Mild - moderate cardiomegaly is unchanged . Possible , small , bilateral pleural effusions are noted . A right pigtail drainage catheter is unchanged in location . Minimal , interval progression of a diffuse , mixed airspace and interstitial and airspace abnormality .
    OUTPUT:
    
1 . Persistent , minimally changed , severe pneumomediastinum and diffuse subcutaneous emphysema . 2 . Moderately - severe of a diffuse , mixed airspace and interstitial abnormality .