Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Interval placement of a right pigtail catheter chest tube . No pneumothorax . New subcutaneous emphysema . Right basilar opacities have improved , but mild bibasilar atelectasis persists . Probable small left pleural effusion . Heart size is unchanged . .
    OUTPUT:
    
New right chest tube without pneumothorax . Significantly improved right basilar opacities .