Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lordotic positioning . There is background COPD . There is moderate cardiomegaly , with sternotomy wires noted . No CHF . There are small bilateral effusions , with bibasilar atelectasis . There is minimal patchy retrocardiac opacity . No pneumothorax . Compared to ___ , bibasilar atelectasis and previously seen retrocardiac opacity has improved .
    OUTPUT:
    
1 . Bibasilar atelectasis and bilateral effusions . Improved , but residual , left lower lobe collapse / consolidation compared with ___ . The right effusion could be very slightly larger . 2 . No CHF .