fig8

Figure 8. Dissection of the left recurrent nerve lymph nodes via a left transcervical approach under pneumomediastinum. A: the left recurrent nerve lymph nodes are dissected along the dorsal side of the left recurrent nerve; B: the ventral side of the left recurrent nerve lymph nodes are dissected along the left recurrent nerve and the tracheal branch of the left recurrent nerve is preserved as much as possible