Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right - sided chest drain in situ with interval decrease in the right - sided pleural effusion . No left - sided effusion . Low lung volumes . No new areas of airspace consolidation . The pulmonary nodule in the left upper lobe is vaguely visualized on today 's study .
    OUTPUT:
    
Mild interval decrease in size of the right - sided pleural effusion . No new areas of airspace consolidation .