Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been interval placement of a right - sided chest tube with interval improvement of the large right - sided pleural effusion . There is no pneumothorax . There again appears to be a moderate right - sided pleural effusion which appears to layer along the right lung . The left lung is unchanged . The heart size is unchanged .
    OUTPUT:
    
Interval placement of a right - sided chest tube with interval improvement of the large right - sided pleural effusion . No pneumothorax .