[Intraoperative radiotherapy combined with external beam radiation for prostate cancer without metastasis]

Between 1989 and 1996, 35 patients with prostate cancer without metastasis received intraoperative radiotherapy combined with external beam radiation. 10 of 16 stage B patients and all of 19 stage C patients received additional endocrine therapy for the initial treatment. The radiation therapy included 25-30 Gy of intraoperative radiotherapy for prostate and 30 Gy of external beam radiotherapy for small pelvic region. One patient of stage C was dead for cancer and 4 patient were dead for other causes during 15-99 (mean: 41.6) months follow up period. The overall actuarial survival at 5 years by Kaplan-Meier method were 92.3% for stage B and 87.2% for stage C. Although cystitis, proctitis and anal bleeding were observed as the adverse effects of radiotherapy, both acute and chronic symptoms were not critical. In conclusion, intraoperative radiotherapy combined with external beam radiotherapy was revealed as an effective treatment for prostate cancer without metastasis.