Fig. 4

The coronal computer tomography image of patient 5 in different time. a The fistula in the left main bronchus (arrow) and the drainage tube (arrow head) is placed in the left thoracic cavity; b the occluded branch of the stent can be seen in the left main bronchus (arrow) and the drainage tube (arrow head) is still in the left thoracic cavity; c the residual pleural space diminishes over time; d the residual pleural space disappears during follow-up