Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since the prior examination there is little relevant change . A small to moderate right apical pneumothorax is unchanged . There is no evidence of tension . A right chest tube is in standard unchanged position . A right subclavian approach central venous catheter tip projects in the cavoatrial junction . An enteric feeding tube courses below the diaphragm out of field of view . There is unchanged diffuse asymmetrically distributed parenchymal opacification , compatible with known pneumocystis carinii pneumonia .
    OUTPUT:
    
No significant change . Unchanged extent of a small - to - moderate right apical pneumothorax .