Indications for radiation therapy for cervical cancer: 2010 NCCN guidelines: Adjuvant therapy after radical cervical cancer surgery depends on surgical findings and disease stage. For patients with stage IA2 (T1a2N0M0), stage IB1 (T1b1N0M0) or stage IIA (T2aN0M0) and negative intraoperative lymph node findings, management is as follows: (1) Close observation. (2) pelvic radiotherapy (class I) with (or without) cisplatin-based concurrent chemotherapy (chemotherapy as class 2B) for those with high-risk factors (large primary tumor (>4 cm), deep interstitial infiltration (more than 1/3) and or LVSI. Indications for radiotherapy for cervical cancer, Ministry of Health, 2011: Radiotherapy for cervical cancer is indicated for all stages of cervical cancer, but mainly applied to patients with stage IIB (T2bN0M0) or above in the middle and late stages and those who are early but cannot tolerate surgical treatment. Postoperative adjuvant radiotherapy is required for surgical patients with high-risk factors such as unclear surgical margins and lymph node metastasis. Postoperative high-risk factors include: lymph node metastasis, positive cut margins, parametrial infiltration, deep muscle infiltration, large local tumor volume in the cervix, and vascular tumor emboli. Indications for postoperative chemotherapy: postoperative high-risk factors such as lymph node metastasis, positive margins, parametrial infiltration, vascular tumor embolism, adenocarcinoma and other special pathological types; simultaneous radiotherapy can also be used. In intermediate and late stage patients, simultaneous radiotherapy and chemotherapy are mainly used.