Non-contrast chest CT, lung window. Non-contrast chest CT, lung window. A) Coronal plane and B) Oblique coronal plane (magnified view), shows the point of communication between a peripheral enlarged bronchiolar structure and the pleural space, compatible with a bronchopleural fistula (red arrow). Note extensive soft tissue emphysema (blue arrows), large pneumomediastinum (green arrow) and left pneumothorax (yellow circle). Chest tube (pink asterisk).