Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Interval increase in small right pleural effusion , some which appears loculated , with pigtail pleural catheter again seen in the lateral right mid hemithorax . A small left pleural effusion appears smaller compared to exam from ___ , however , this may be due to a more erect position . The heart size is unchanged . No pneumothorax or pulmonary edema .
    OUTPUT:
    
1 . Interval increase of small right pleural effusion , some which appears loculated , with pigtail pleural catheter in similar position to that ___ ___ . No pneumothorax .