fig9

Figure 9. Dissection of the subaortic arch to the left tracheobronchial lymph nodes via a left transcervical approach under pneumomediastinum. These lymph nodes can easily be dissected by cutting only the left and ventral side of these lymph nodes while pulling the esophagus toward the right side because the caudal and dorsal side of these lymph nodes have been already dissected via a right transcervical approach