Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Bilateral pigtail catheters are unchanged in appearance . A persistent large right pleural effusion is unchanged with adjacent atelectasis . A right central venous catheter ends in the low SVC . There is no new consolidation or edema . Pleural fluid tracks upwards towards the right apex . There is no pneumothorax . The cardiomediastinal silhouette is stable .
    OUTPUT:
    
1 . Stable large right pleural effusion . 2 . No pneumothorax .