Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since the prior radiograph , there has been no significant change . There is a right pleural effusion with loculation near the upper lung zone which is not changed from the prior CT exam on ___ . Linear opacities at the right base are likely atelectasis . Opacification of the left base is unchanged , and right IJ central line is stable in position .
    OUTPUT:
    
No significant change since prior study . Persistent large right pleural effusion with loculation as seen on prior CT exam .