Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is intubated with a double - barrel endotracheal tube whose narrower limb terminates in the distal left main stem bronchus . An orogastric tube terminates in the stomach . There is substantial increased volume loss in the left hemithorax with increased opacification suggesting atelectasis . Large left perihilar mass csn also be discerned . Compensatory hyperinflation of the right lung is noted . The right lung appears clear . There is no pneumothorax .
    OUTPUT:
    
Substantial new volume loss in the left lung status post placement of double - lumen endotracheal and orogastric tubes . Right lung remains clear .