Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Status post left upper lobe RFA . Tiny loculated left - sided pneumothorax has not substantially changed since post biopsy CT . Increasing ground - glass opacity surrounding the fiducial marker and site of RFA . There is a moderate amount of subcutaneous emphysema along the left lateral chest wall extending to the neck . The lungs remain hyperinflated with bibasilar atelectasis . Heart size is normal .
    OUTPUT:
    
Stable small loculated left - sided pneumothorax unchanged since the procedure . New moderate left - sided subcutaneous emphysema .