Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lines and tubes are unchanged in position . The right - sided pleural effusion has decreased in size . There is a persistent left - sided pleural effusion with retrocardiac atelectasis .
    OUTPUT:
    
1 . Decrease right - sided pleural effusion . 2 . Should there be continued clinical concern for diaphragmatic weakness , a Sniff Test under fluoroscopy can be performed as the current study does not evaluate for diaphragmatic movement .