Early stage intermediate grade non-Hodgkin's lymphoma (NHL) is frequently treated with chemotherapy alone or in conjunction with radiotherapy. We have managed clinical Stage I nodal, intermediate grade NHL with involved field radiotherapy alone for non-bulky (less than 5 cm post-surgery) disease or combination chemotherapy alone for more bulky disease. Forty-three patients were treated between 1978 and 1989. Of the 30 patients with non-bulky disease treated with radiotherapy, 29 (97%) achieved complete remission (CR). Thirteen (42%) patients relapsed after radiotherapy and ten of these achieved a further CR (durable in eight) following salvage chemotherapy. Eleven patients with bulky disease received combination chemotherapy with nine (82%) attaining CR (durable in eight). Two patients with bulky disease received radiotherapy-both achieved CR, but have relapsed and died of lymphoma. Overall actuarial 5 year survival for the total group is 77% with a median follow-up of 30 months (range 3-119 months). The 5 year actuarial survival for the 30 patients with non-bulky disease treated with radiotherapy is 86% at a median follow-up of 39 months (range 8-119 months). The 4 year actuarial survival of the 11 patients treated with chemotherapy is 60% with a median follow-up of 25 months (range 3-55 months). We conclude that involved field radiotherapy alone is efficacious for clinical stage I patients with non-bulky nodal intermediate grade NHL and that patients relapsing after radiotherapy are adequately salvaged by chemotherapy. Patients with bulky disease have an inferior survival and should receive combination chemotherapy.
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