Because of the different stages of cervical cancer, not all cervical cancers are safe after the removal of the uterus. For example, in the middle and late stages of cervical cancer, even after the removal of the uterus, there may be a recurrence of the cancer and it may be life-threatening. If cervical cancer is detected at an early stage, when the cancer cells have not metastasized elsewhere and are only confined to the cervix, it is usually called early stage cervical cancer, so it is possible to perform open surgery or laparoscopic surgery to completely remove the uterine adnexa and to perform pelvic lymph node dissection. After the surgery, radiotherapy is not necessarily needed, because it is early stage cervical cancer, so it may be completely cured after excision. If the cervical cancer is detected late and the cancer cells have metastasized elsewhere in the pelvic cavity, even if surgery is performed to remove the uterine adnexa, it is not guaranteed that all cancer cells have been removed, so radiotherapy is still needed to kill the cancer cells after removal to avoid metastasis and recurrence. For advanced cervical cancer, even if radiotherapy is administered, the chance of recurrence after surgery is relatively high, so for advanced cervical cancer, surgery to remove the uterus is not necessarily required, and only symptomatic supportive treatment may be recommended.