[Results in oligodendroglioma: postoperative radiotherapy combined with chemotherapy]

The retrospective analysis of 39 cases of supratentorial oligodendroglioma included the years 1965 - 84. The 5-year and 10-year survival rates were 73.1% and 32.2%, respectively. Although oligodendrogliomas were benign tumor, the 10-year survival rate was not good. Recurrence of tumor appeared in 9 cases and some cases were noticed about 10 years after the treatment. So, long term follow-up is important for oligodendrogliomas. Our treatment for oligodendrogliomas was surgical removal and postoperative radiochemotherapy (radiation + ACNU + FT-207 + PSK) for several years. The previous cases who had only subtotal removal of tumor showed short survival time. On the other hand, the cases treated with postoperative radiotherapy or radiochemotherapy showed relatively good results.