Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As compared to the previous radiograph , the amount of pleural fluid on the right has increased . The overall degree of pleural air at the level of the basal right hemithorax is unchanged . Also unchanged are the no new parenchymal opacities , combines to scarring , at the right lung apex . Unchanged appearance of the heart and of the left lung .
    OUTPUT:
    
Slight increase in pleural fluid , unchanged basal pleural air on the right . Unchanged scars in the right upper lung .