Sentinel Lymph Node Biopsy Versus Pelvic Lymphadenectomy in Early-stage Cervical Cancer (PHENIX/CSEM 010)

Inclusion Criteria: * Patients with newly histologically confirmed cervical carcinoma * Histopathology squamous carcinoma, adenocarcinoma or adeno-squamous carcinoma * Original clinical stage must be FIGO (2018) stage IA1 (lymphovascular space involvement), IA2, IB1, IB2 and IIA1 * No suspected node should be found on imaging examination (RESIST 1.1) * Age between 18-65 * Patients must give signed informed consent * P.S status: 0-1 * Estimated survival time \> 3 months * Tumor diameter ≤ 3 cm Exclusion Criteria: * The presence of uncontrolled life-threatening illness * Receiving other ways of anti-cancer therapy * Investigator consider the patients can't finish the whole study * With normal liver function test (ALT、AST\>2.5×ULN) * With normal renal function test (Creatinine\>1.5×ULN) * WBC\<4,000/mm3 or PLT\<100,000/mm * The whole cervix has been occupied by tumor and there is no normal surface left for tracer injection * History of severe heart disease or deep venous thrombosis; 4) Presence or history of other malignant disease * Gestation or perinatal period * Intention to fertility preservation.