PATIENT CHARACTERISTICS: Age: 18 and over Performance status: SWOG 0-2 Life expectancy: At least 2 months Hematopoietic: Absolute neutrophil count at least 1800/mm3 Hematocrit at least 30 mg/dL Platelet count at least 50,000/mm3 Hepatic: Bilirubin no greater than 1.5 times normal unless due to disease, then less than 3.5 times normal Transaminases less than 3 times upper limit of normal (ULN) (less than 5 times ULN if due to liver metastases) Renal: Creatinine no greater than 2.5 times normal Cardiovascular: No severe cardiac abnormalities Must have adequate venous access No history of sustained ventricular arrhythmia or unexplained syncope Pulmonary: No severe pulmonary abnormalities Other: Not pregnant or nursing Effective contraception required of fertile female patients No serious concurrent medical or psychiatric illness Adequate nutrition No human antimouse antibodies