Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Small left pleural effusion appears improved compared to the prior study on ___ . Adjacent left basilar consolidation likely represents compressive atelectasis . No other consolidation . Mild vascular congestion , improved . No pneumothorax . Left PICC terminates in the superior cavoatrial junction . Sternal wires are intact .
    OUTPUT:
    
Small left pleural effusion with probable adjacent atelectasis , improved compared to ___ .