Abstract
A brief review of attempts in the United Kingdom to improve the results of treatment of high grade (grade 3, 4) supra-tentorial astrocytomas is presented. The radiosensitizer misonidazole failed to improve the results of postsurgical radiotherapy, however, multivariate analysis of data from these patients has provided a prognostic index of use in defining good and poor prognosis patients. An overview study of adjuvant nitrosourea therapy trials has shown a small significant advantage for the chemotherapy. A study of chemosensitization by benznidazole of CCNU treatment of patients in relapse failed to demonstrate any effect.
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