Fig. 4

(a) Lymphadenectomy, sentinel lymph nodes, and total samples sent. (b) The sample was dissected, and three lymph nodes were identified. (c) Example of sequential “bread slice” sections every 2–4 mm, showing macroscopically negative lymph nodes. (d) The lymph nodes were completely submitted for histological analysis due to the absence of macroscopic metastasis. Cleavage: A1-A4 corresponds to the first lymph node, A5-A6 corresponds to the second lymph node, and A7-A10 comprises the third lymph node