Eight patients with cervical carcinoma, Stage I B, and tumor size of 5 centimeters or more were treated with preoperative brachytherapy followed by Wertheim; in all of them the right ovary was preserved. The minimum radiation rate over the ovary was 458 rads. Plasma estradiol and gonadotrophin levels were consistent with those observed after castration. These results are compared and discussed with those of the control group with only pelvic radiation or surgery.