Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient has had prior median sternotomy with CABG . A nasogastric tube terminates at the level of the GE junction . An external pacer lead remains in place . Right apical chest tube in place with small right apical pneumothorax . There is a small amount of right upper chest wall subcutaneous emphysema . The patient has had recent esophagectomy with a small amount of expected postoperative pneumopericardium and pneumoperitoneum . Band - like airspace opacities at both lung bases and at the periphery of the right lung are most likely due to atelectasis .
    OUTPUT:
    
Bibasilar airspace opacities are most likely due to atelectasis given improvement on the subsequent radiograph . Small right apical pneumothorax with chest tube in place . Small amount of expected postoperative pneumopericardium and pneumoperitoneum .