Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are within normal limits . Small bilateral pleural effusions have improved since the prior study . There is no consolidation or pneumothorax . Mild bibasilar atelectasis is present . Multiple intact sternotomy wires are present .
    OUTPUT:
    
Bilateral small pleural effusions , improved since the prior study . Bibasal atelectasis .