Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral radiographs of the chest demonstrate well expanded lungs . There are small bilateral pleural effusions and improving bibasilar atelectasis . There is a small hydro-pneumothorax seen on the lateral view . It is not possible to compare this finding to prior studies given lack of prior lateral radiographs . The patient is status post cardiac surgery with intact median sternotomy wires and an expected postoperative contour .
    OUTPUT:
    
1 . Small bilateral pleural effusions ; improving bibasilar atelectasis . 2 . Small anterior hydro-pneumothorax seen on the lateral view only .