PATIENT CHARACTERISTICS: Age: 18 to physiologic 55 Patients over 55 are eligible only if study chairperson agrees that the patient can tolerate intensive chemotherapy Performance status: Zubrod 0-1 Life expectancy: More than 2 years Hematopoietic: Granulocyte count at least 1,500/mm3 Platelet count at least 100,000/mm3 Hemoglobin at least 9.0 g/dL Hepatic: Bilirubin less than 1.5 times normal Renal: Creatinine less than 1.5 times normal Cardiovascular: LVEF at least 50% No acute changes or arrhythmias on ECG No cardiomegaly on chest x-ray or physical exam No uncontrolled or severe cardiovascular disease, including myocardial infarction within the past 6 months or congestive heart failure (CHF) No active cardiac problems, including compensated CHF or angina Other: HIV negative No other malignancy within the past 5 years except curatively treated basal cell skin cancer or carcinoma in situ of the cervix No active uncontrolled bacterial, viral, or fungal infection No other serious medical illness that would limit survival to less than 2 years No psychiatric condition that would preclude informed consent or compliance No uncontrolled duodenal ulcer Not pregnant Fertile patients must use effective contraception