PATIENT CHARACTERISTICS: Age: Over 17 Performance status: ECOG 0 or 1 Life expectancy: Greater than 5 months Hematopoietic: WBC at least 1,500/mm3 Platelet count at least 50,000/mm3 Hepatic: Not specified Renal: Not specified Cardiovascular: No New York Heart Association class III or IV heart disease Other: Not pregnant or nursing Fertile patients must use effective contraception No other medical condition that might prevent completion of study or prevent immunological response to study regimen No other concurrent serious medical illness No active bleeding