Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since ___ , small left pleural effusion is increased , small right pleural effusion is new , moderate retrocardiac and right basilar atelectasis are unchanged . The left pacemaker is in the appropriate position . The heart size is mildly enlarged . No pneumothorax .
    OUTPUT:
    
Small left pleural effusions increase , small right pleural effusion is new , and moderate retrocardiac and right basilar atelectasis are unchanged since ___ .