Tracheobronchial Injury

Etiology: blunt trauma causes tear in trachea or mainstem bronchus
Imaging: massive pneumomediastinum with minimal pneumothorax, fallen lung sign on CT
Clinical: little improvement after chest tube

Cases of Tracheobronchial Injury

CXR of tracheobronchial injury of left mainstem bronchus — CXR AP shows air in the superior mediastinum and neck, airspace disease in the left upper lobe, and a small amount of air in the left pleural space.