Para-aortic Prophylactic Irradiation for Locally Advanced Cervical Cancer

Inclusion Criteria: * The patients voluntarily participated in the study and signed the informed consent * 18-75 female * Cervical squamous cell carcinoma / adenocarcinoma / adenosquamous cell carcinoma * According to International Federation of Gynecology and Obstetrics(FIGO) 2009 stage, stage ⅠB2 - ⅣA with positive pelvic lymph nodes and negative common iliac and paraaortic lymph nodes diagnosed by PET-CT * Cisplatin chemotherapy is acceptable * Eastern Cooperative Oncology Group(ECOG) score 0-1 * The expected survival was more than 6 months * Women of childbearing age must have a pregnancy test (serum or urine) within 7 days before enrollment, and the result is negative, and they are willing to use appropriate contraceptive methods during the test * According to the judgment of the researcher, those who can comply with the trial protocol Exclusion Criteria: * Uncontrolled severe infection * Combined with other malignant tumor patients who need treatment and / or new diagnosis within 5 years * The patient has received anti-tumor treatment * Liver cirrhosis, decompensated liver disease, chronic renal insufficiency and renal failure * History of immunodeficiency, including HIV positive or other acquired congenital immunodeficiency disease * Myocardial infarction, severe arrhythmia and grade 2 or more congestive heart failure (NYHA classification) * Patients with previous pelvic artery embolization * Previous radiotherapy for pelvic malignant tumor * There was a history of severe allergic reaction to platinum containing chemotherapy drugs * Complications, need to be taken during the treatment of liver and kidney function damage drugs, such as tuberculosis * The patients who could not understand the content of the experiment and could not cooperate and refused to sign the informed consent * Patients with accompanying diseases or other special circumstances that seriously endanger the safety of patients or affect the completion of the study