Interstitial radiotherapy using I-125 seeds in brain neoplasms of slow development

The opportunity of stereotactic biopsy for the histological diagnosis of brain tumors, the radiobiologic bases, clinical implications and technical possibilities of interstitial radiation therapy are discussed. The results of 9 cases, out of 14 treated to-date over 20 months, with a minimum follow-up of 4 months, are presented.