Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since the prior radiograph performed yesterday evening , the patient is now newly intubated . The tip of the endotracheal tube terminates approximately 3 cm above the carina . There is worsening opacification of the right lung base , which may be due to aspiration . Additionally there is complete opacification of the left hemithorax with leftward shift of mediastinal structures , suggesting lung collapse . There is no pneumothorax .
    OUTPUT:
    
1 . Endotracheal tube is appropriately positioned approximately 3 cm above the carina . 2 . Complete opacification of the left hemithorax with leftward shift of mediastinal structures , suggesting left lung collapse , possibly due to mucous plug . 3 . Worsening right lung base opacity , which may be due to aspiration .