OUTLINE: This is a multicenter study. Patients receive interferon alfa IV over 20 minutes daily for 5 consecutive days a week for 4 weeks. Patients then receive radiotherapy on days 2 and 4 and interferon alfa subcutaneously (SQ) on days 1, 3, and 5 for 2.5 weeks. Interferon alfa SQ continues 3 times a week for 10 months in the absence of disease progression or unacceptable toxicity. Patients are followed every month for 3 months, then every 3 months for 2 years, then every six months until year 5, and then annually thereafter.