Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a small to moderate left pleural effusion , likely slightly smaller in size as compared to the prior study , with overlying atelectasis . Left mid lung / perihilar patchy opacity of the patchy opacities in the right mid to lower lung are seen , raising concern for infection or less likely aspiration . The cardiac silhouette is top - normal to mildly enlarged . The mediastinal contours are grossly unremarkable . Evidence of distal seen along the thoracic spine .
    OUTPUT:
    
Small to moderate left pleural effusion with overlying atelectasis . Left mid lung and right mid to lower lung patchy opacities are seen which could be due to multifocal infection or aspiration . Correlate with history of malignancy .