Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a larger right - sided pleural effusion with almost complete opacification of the right lung . This is increased compared to prior . An underlying infectious infiltrate can not be excluded . There is also some volume loss and increased opacity in the retrocardiac region . The left upper lung is relatively clear .
    OUTPUT:
    
Worsened appearance to the lungs .