Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with the prior study , no change in positioning of the right subclavian central line . The moderate right - sided pleural effusion is similar since ___ . There is likely adjacent compressive atelectasis . Cardiomediastinal silhouette is unchanged .
    OUTPUT:
    
No change in the moderate right pleural effusion since ___ .