[The role of radiation therapy in the management of non-Hodgkin's lymphoma].

For patients with stage I-II malignant lymphoma with low-grade malignancy, five-year survival rates after radiation therapy are 75-100%. For patients with intermediate malignancy, five-year survival rates after radiation therapy alone are 70-100% for patients with pathological stage I-II and 45-75% for clinical stage I-II. Radiation dose to the tumor at least 40 Gy was required to produce consistent local control. Initial use of chemotherapy with radiation therapy is indicated to improve relapse-free survival rate for patients with clinical stage I-II, as well as pathological stage I-II.