OUTLINE: Patients are treated sequentially on Regimens A, B, and C depending on response. The following acronyms are used: CF Leucovorin calcium, NSC-3590 DOX Doxorubicin, NSC-123127 MTX Methotrexate, NSC-740 VP-16 Etoposide, NSC-141540 Regimen A: Single-Agent Chemotherapy. VP-16. Regimen B: 2-Drug Combination Chemotherapy. VP-16/DOX. Regimen C: 3-Drug Combination Chemotherapy. VP-16/DOX/MTX.