PATIENT CHARACTERISTICS: Age: 16 and over Performance status: ECOG 0-2 Life expectancy: Not specified Hematopoietic: Not specified Hepatic: Not specified Renal: BUN no greater than 1.5 times upper limit of normal (ULN) Creatinine no greater than 1.5 times ULN Other: No known allergies to mouse proteins No second primary malignancy within past 5 years other than adequately treated in situ carcinoma of the cervix or uterus, or basal or squamous cell carcinoma of the skin Not pregnant or nursing Effective contraception required of all fertile patients