Fig. 2

Chest computed tomography scan showing typical neogenetic bullae neighboring the staple line. a Preoperative findings of the pulmonary apex: the left side preoperative pneumothorax can be seen, but the bullae on the apex that are detected postoperatively are not visible. b One-year postoperative findings clearly show bullae on the apex. c At a higher magnification, the staple line can be seen. The white arrow indicates the neogenetic bullae, while the black arrowheads indicate the staple lines