PATIENT CHARACTERISTICS: Age: Over 18 Performance status: Karnofsky 80-100% Life expectancy: Not specified Hematopoietic: WBC greater than 2,500/mm3 Platelet count greater than 100,000/mm3 Hemoglobin at least 10 g/dL Hepatic: Bilirubin less than 2 mg/dL SGOT/SGPT less than 2 times normal Renal: Creatinine less than 2 mg/dL Other: No other illness or condition, including innate or pharmacologic immunosuppression, that would preclude study No other malignancy within the last 5 years except adequately treated basal or squamous cell skin cancer or carcinoma in situ of the cervix HIV negative Not pregnant or nursing