Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single lead pacemaker is unchanged . Left lower lobe collapse and small left pleural effusion are persistent . New subtle opacity at the right lung base may simply represent atelectasis . Small right pleural effusion . No pneumothorax . Stable post operative widening of the cardiac silhouette .
    OUTPUT:
    
Unchanged left lower lobe collapse and left pleural effusion . New right basilar atelectasis and right pleural effusion .