Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Small left pleural effusion with left mid and lower lung zone atelectasis / consolidation , not significantly changed since the prior studies given differences in technique . The right lung is clear . No pneumothorax identified . The size of the cardiac silhouette is mildly enlarged .
    OUTPUT:
    
Small left pleural effusion and left mid and lower lung zone atelectasis / consolidation , not significantly changed from prior imaging given differences in technique .