[Results of cobalt-60-irradiation of brain tumors].

The periods of survival which can be obtained on patients with a primary tumor of the brain after an unique or post-operative cobalt-60-irradiation is dependent of the histology: while periods of survival of several years have been obtained in case of medulloblastoma and astrocytoma, the irradiation of the multiform glioblastoma represents only a palliative measure with a temporary amelioration for any months.