Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are unchanged to slightly improved when compared to the prior study . There is persistent visualization of a right basal pleural effusion with associated atelectasis . Superimposed infection can not be excluded . Left lung appears grossly clear within the limitations of this study . A right - sided internal jugular Port - A - Cath terminates in the distal SVC . A right upper quadrant drainage catheter is unchanged in position . Previous median sternotomy noted . No pneumothorax seen .
    OUTPUT:
    
No significant interval change when compared to prior study .