OUTLINE: Patients are assigned to 1 of 2 peripheral blood stem cell (PBSC) mobilization groups at the discretion of the attending physician: Group 1: Patients receive high dose cyclophosphamide IV over 6 hours and filgrastim (G-CSF) subcutaneously (SQ) daily beginning 24 hours after completion of cyclophosphamide and continuing until 3 days after blood counts have recovered and until PBSC are harvested. Group 2: Patients receive G-CSF SQ daily alone until PBSC are harvested. Both groups: PBSC are harvested on days 15-19 after cyclophosphamide infusion or when blood counts recover. Patients receive high dose carboplatin IV continuously, ifosfamide IV over 4 hours, and thiotepa IV over 1 hour on days -5 to -3. PBSC are reinfused beginning 48 hours after completion of combination chemotherapy. Patients receive G-CSF SQ beginning on day 0 and continuing until 3 days after blood counts have recovered. Sites of pretransplantation metastases greater than 3 cm are irradiated beginning after transplantation and after blood counts recover. Patients are followed every month for 1 year.