Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is no significant interval change in the extent of the known right pneumothorax . Bilateral pigtail catheters are present and unchanged . A right chest wall Port - A - Cath is present , the tip projecting over the superior cavoatrial junction . Stable appearance of the diffuse bilateral interstitial opacities . The size of the cardiomediastinal silhouette is within normal limits .
    OUTPUT:
    
No significant interval change since the prior study of the known right pneumothorax .