Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Following right thoracentesis , a right pleural effusion has substantially decreased in size with residual moderate pleural effusion , which is likely partially loculated . No visible pneumothorax . Improving atelectasis within the adjacent right lung with residual atelectasis , most prominent in the right middle lobe and right lower lobe . Pulmonary vascular congestion is accompanied by mild interstitial edema . Drainage catheters overlie the right upper quadrant of the abdomen , and there is persistent marked elevation of the right hemidiaphragm .
    OUTPUT:
    
Decreased size of right pleural effusion following thoracentesis , with no evidence of pneumothorax .