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  • Title: Preliminary results of interstitial 192Ir brachytherapy for malignant gliomas.
    Author: Matsumoto K, Nakagawa M, Higashi H, Maeshiro T, Tsuno K, Mishima N, Furuta T, Ohmoto T, Taguchi K, Nakagawa T.
    Journal: Neurol Med Chir (Tokyo); 1992 Sep; 32(10):739-46. PubMed ID: 1280775.
    Abstract:
    Twenty-six patients with recurrent or unremovable malignant gliomas were treated by interstitial brachytherapy with iridium-192 seeds. Stereotactic implantation of the afterloading catheters using the Brown-Roberts-Wells computed tomography (CT)-guided stereotactic system was performed in 24 patients and surgical implantation in two patients with pontine glioma. The response to therapy was measured by serial CT, magnetic resonance imaging, and clinical examination. Tumor regression was seen in 17 patients 1-3 months after implantation. Tumor progression was seen in only three patients. After interstitial brachytherapy, the most commonly observed CT finding was central low density. Median survival time was 18 months after implantation. Autopsies in five patients revealed the delayed effects of radiation injury such as typical vascular changes, microcalcification, and coagulative necrosis in the implant area and tumor recurrence at the periphery. The results suggest that brachytherapy is not curative but prolonged the median survival time by 6 months.
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