Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Significant right pleural effusion has improved since chest tube placement and is now moderate . There is an air - fluid level in right mid hemithorax which is probably in the fissure . Left lung is unremarkable . There is subcutaneous air .
    OUTPUT:
    
Significant right pleural effusion has improved after chest tube placement . Air-fluid level is probably in the fissure .