Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left bronchial stents are again seen and in unchanged position . Postoperative changes are seen within the mediastinum . The heart is mildly enlarged . New bilateral opacities at the lung bases are likely related to atelectasis . There is no focal consolidation or pneumothorax .
    OUTPUT:
    
New bilateral opacities at the lung bases likely reflect atelectasis .