The definition of "sentinel" lymph nodes today has found wide application in clinical practice for complex examination and treatment of patients with cancer of the uterine body. Further research in this direction will help to optimize intraoperative staging of tumors. They will also allow avoiding extended surgeries and limiting themselves only to the removal of sentinel lymph nodes in the early stages of the disease. And vice versa, to expand the scope of the operation if lymphogenous metastases are detected outside the zone removed by standard lymph node dissection. The definition of SLN is sufficient to identify patients at high risk of recurrent EC and to plan adjuvant therapy.