Figure 2

Intraoperative findings. (A) A 2.5 cm skin incision was made, and a wound retraction system (Alexis Wound Retractor, Applied Medical, Rancho Santa Margarita, CA USA) was placed through the incision. (B) A pedunculated tumor protruded into the thoracic cavity from the visceral pleura, and was attached to the left upper lobe. (C) The tumor stalk was resected using an articulating endostapler (Covidien, Norwalk, CT, USA).