[en] Okabayashi's extensive panhysterectomy is used for cancer of uterine cervix in Japan, and the rate of its practice was 45.6% at the National Cancer Center (1962 - 73, stage 1 - 4 cases). Cancer death within 5 years occurred in 92.3% of the total deaths, and the total surgical deaths did not exceed 1%. Postoperative irradiation was performed in cases with lymph node metastasis, those with parametrial invasion and those with deep primary lesions. Intravaginal irradiation was sometimes performed in cases of insufficient vaginal excision. Therefore, the 5-year survival rate of postoperatively irradiated cases was 71.4%, and that of non-irradiated cases 93.7%. The 5-year survival rate of all cases of adenocarcinoma including irradiated cases was 44.7%. Since the effect of irradiation was not so promising, postoperative irradiation with fast neutrons is performed in adenocarcinoma cases with metastasis and/or infiltration. Effect of combination with chemotherapy has been poor. The indication of less surgery for early cases is under examination. (Chiba, N.)