Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are stable . There is increased opacification at the right lung base compared to the prior study , which likely represents a combination of increased atelectasis and a small pleural effusion . The left lung is unremarkable . There is no pneumothorax . An enteric tube is again seen with tip in unchanged position .
    OUTPUT:
    
Increased opacification of the right lung base , reflecting increased atelectasis and a possible small pleural effusion .