- Patients undergo resection. After resection, patients receive regimen I comprising DOX IV on weeks 0, 6, 12, 18, and 24; VCR IV on weeks 1, 2, 4, 5-8, 10-13, 18, and 24; cyclophosphamide (CTX) IV over 1 hour on days 1-3 of weeks 6, 12, 18, and 24 and on days 1-5 of weeks 3, 9, 15, and 21; and etoposide (VP-16) IV over 1 hour (after CTX infusion) on days 1-5 of weeks 3, 9, 15, and 21 in the absence of disease progression. Filgrastim (G-CSF) is administered subcutaneously (SC) beginning 24 hours after completion of chemotherapy and continuing until blood counts recover. Patients undergo radiotherapy to site of recurrence beginning within 1 week after initiation of chemotherapy.