Using a surgical procedure called extraperitoneal laparoscopic lymphadenectomy, surgeons can remove and examine the lymph nodes in the abdomen. This may help to find cancer in the lymph nodes that cannot be detected using standard techniques. If these lymph nodes contain cancer, the area of the body treated with radiation can be "extended" to treat new areas. This means that radiation will be used to treat both the para-aortic lymph nodes (lymph nodes in the abdomen) in addition to the standard pelvic radiation.