[Results of the treatment of malignant lymphoma of the brain--a report of Japan Lymphoma Radiation Therapy Group (JLRTG)].

Retrospective analysis of patients with malignant lymphoma of the brain was carried out. All cases were mainly treated with radiation therapy. Overall survival was 44% and 37% at two and five year. Survival was statistically better for patients with diffuse medium-sized cell or diffuse mixed type compared with diffuse large cell type by the LSG classification, for the age group less than 50 years compared with greater than or equal to 50 years, and for the group with Karnofsky Index greater than or equal to 50% compared with less than or equal to 40%. In 11 of 15 patients the first recurrent site was the central nervous system.