Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The support devices are stable and in good position . The left lung remains clear with pigtail catheter in good position . No pneumothorax . The moderate right - sided effusion is likely layering posteriorly given for differences in technique . The right upper lobe atelectasis and aeration has slightly improved .
    OUTPUT:
    
Slight interval improvement right upper lobe atelectasis . Stable moderate pleural effusion .