[Malignant gliomas treated by combination chemotherapy and delayed radiation therapy (author's transl)].

The authors present the therapeutical results of two clinical and histological homogeneous series of malignant gliomas. The first group includes 46 patients operated upon and treated successively by chemotherapy associating VM26 and CCNU, a conventional delayed radiotherapy 6 months after surgery and again chemotherapy. In this group, the mean survival is 17 months and 46% of patients were surviving at 18 months. The second group includes 28 patients operated upon and treated with the same associated chemotherapy without radiation therapy. The mean survival was 11 months and 24% of patients were surviving at 18 months. The comparison of results shows that after surgery, the association of a chemotherapy and delayed radiotherapy is more efficient than chemotherapy alone. However, the systematic study of nervous system tolerance to irradiation post-chemotherapy suggests that, in some cases, the chemotherapy is able of increasing the pathogenic effect of irradiation on the brain.