Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since the prior radiograph performed yesterday afternoon , there has been slight improvement in the moderate left pleural effusion and small right pleural effusion . There is bibasilar compression atelectasis . No pneumothorax . No hilar lymphadenopathy . Stable cardiomegaly due to known large pericardial effusion .
    OUTPUT:
    
1 . Slight improvement in appearance of moderate left and small right pleural effusion . 2 . There are no nodules or masses in the visualized portions of the lungs .