OUTLINE: This is a dose escalation study of topotecan. Mobilization: After completion of salvage chemotherapy and within 6 weeks of second look laparotomy, patients receive cyclophosphamide IV over 2 hours and paclitaxel IV over 2 hours for 2 days. Patients then receive filgrastim (G-CSF) subcutaneously daily beginning 24 hours after completion of chemotherapy and continuing until autologous peripheral blood stem cells (PBSC) are harvested and selected for CD34+ cells. High dose chemotherapy: After priming chemotherapy and within 6 weeks of second look laparotomy, patients receive carboplatin IV over 1 hour on days -8 to -6; topotecan IV over 30 minutes on days -7 to -5 (beginning 12 hours after completion of carboplatin infusion); and etoposide IV over 4 hours on days -5 to -3 (beginning 12 hours after completion of the last topotecan infusion). Cohorts of 4-12 patients receive escalating doses of topotecan until the maximum tolerated dose (MTD) is determined. The MTD is defined as the dose preceding that at which 6 or more of 12 patients experience dose limiting toxicity. Transplantation: PBSC are reinfused on day 0. Patients are followed at 3 and 6 months, then annually thereafter.