OUTLINE: This is an open label study. Patients receive subcutaneous interferon alfa-2b on days 1-4. Patients are hospitalized and receive bolus infusions of interleukin-2 (IL-2) followed by a continuous infusion on days 5-7. Patients are observed at least 12 hours following IL-2 treatment. Treatment is repeated every 4 weeks until disease progression or up to a maximum of six cycles. Patients are followed every 2 months for one year, then for survival.