Fig. 2

The right lung resected in the operation. A The tumor had involved the right main bronchus, the right main bronchus was cut near the tracheal carina to ensure adequate incision margin. B The patient’s right lung was radically resected in operation and Intraoperative frozen section of incision margin reported negative. C The maximum diameter of the tumor was 8.6 cm, and the tumor tissue extensively invaded into three lobes of patient’s right lung (arrow)