Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A left - sided chest tube is again visualized is a small left lateral and apical pneumothorax . This is better visualized on today 's film than on the film from the prior day . Is unclear if this is positional . There is volume loss at both bases with dense retrocardiac opacity . There are prominent gas - filled loops of bowel in the left upper quadrant likely due to ileus . There is a small amount of subcutaneous emphysema is present in the region of the chest tube .
    OUTPUT:
    
Small left pneumothorax . volume loss at both bases .