Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomediastinal and hilar contours are stable . A right pleural effusion is decreased in size , now moderate . There is no left pleural effusion . There is no pneumothorax . There is no focal consolidation concerning for pneumonia . The upper abdomen is unremarkable . No suspicious lesions seen the visualized osseous structures .
    OUTPUT:
    
Interval decrease in size of right pleural effusion after thoracentesis , now moderate .