Adjuvant brachytherapy for Stage IB Grade 2 endometrial carcinoma: Multivariate analysis of a single institution experience.

Objective: The aim was to investigate the value of postoperative brachytherapy for patients with Stage IB, Grade 2 endometrial carcinoma. Patients and Methods: Forty-six patients with Stage IB, Grade 2 endometrial carcinoma, were treated with simple hysterectomy and bilateral oophorectomy in our institution. The mean age was 63 (range, 42-81). Surgical staging, defined as peritoneal washing and pelvic lymph node sampling was performed in 73% of patients. Twenty-two patients (47%) received a postoperative intravaginal brachytherapy (IVRT), and 24 patients (53%) were followed-up without additional treatment. Results: The median follow-up was 60 months. The 5-year overall survival for irradiated and nonirradiated patients, was 83.5 and 94.7%, respectively. Four patients (8.7%) developed relapse, two in the group of postoperative IVRT and 2 in the follow-up only group. Multivariate analysis demonstrated a borderline association ( P = 0.06) between lower uterine segment involvement and poor pelvic-vaginal control. The presence of GOG #99 high-risk features did not affect the pelvic control rate. Conclusion: According to our experience and previously published data, most patients with FIGO Stage IB, Grade 2 endometrial carcinoma may be cured with surgery alone.