A prospective randomized controlled study on the relationship between preserving/removing circumflex iliac lymph nodes and lower limb lymphedema following lymphadenectomy in gynecological malignancies

INTERVENTION: Group one:pelvic lymphadenectomy with circumfle Xiliac nodes distal to the external iliac node (CINDEIN) preservation;Group two:pelvic lymphadenectomy with circumfle Xiliac nodes distal to the external iliac node (CINDEIN) removal; CONDITION: gynecologic oncology PRIMARY OUTCOME: the incidence of Lower limb lymphedema; SECONDARY OUTCOME: the metastasis rate of circumfle Xiliac nodes; INCLUSION CRITERIA: (1) Stages ? b1 ? A2 cervical cancer, ? ? uterine malignant tumors, and various stages of ovarian malignant tumors undergoing satisfactory ovarian tumor cell reduction surgery with clear pathological diagnosis (FIGO 2009 staging); (2) Age 18‐75 years old; (3) Willing to undergo surgery without any contraindications; (4) All patient surgeries include pelvic lymph node dissection; (5) Enrolled patients must understand and voluntarily participate in the study, and sign an informed consent form.