Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been interval removal of a right - sided chest tube . There is a small right apical pneumothorax . Extensive subcutaneous air involving the right chest wall is increased from the prior . Lung volumes are low . Opacity at the base of the right lung and in the inferior portion of the right upper lobe present atelectasis or infection . A retrocardiac opacity is stable . Cardiomediastinal and hilar contours are stable .
    OUTPUT:
    
Small right apical pneumothorax . Bilateral opacities are stable . Subcutaneous air involving the right chest wall is increased .