Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As compared to chest radiograph from 1 day prior , interval decrease in right - sided pneumothorax which is now small . Mediastinal shift has also resolved . Minimal subsegmental atelectasis in the lung bases . Small right - sided effusion . Mild cardiomegaly . Substantial subcutaneous emphysema in the right chest has not changed .
    OUTPUT:
    
Right pneumothorax is decreased and is now small .