Conservative surgery involves the removal of the pelvic lymph nodes (pelvic lymphadenectomy) and/or lymphatic mapping with sentinel lymph node biopsy. The cervix and parametrium are left intact. During surgery, for women no longer wanting children, a simple hysterectomy (removal of the uterus with or without removal of the fallopian tubes and ovaries) can also be performed. In this study, participants will have conservative surgery.