- Group A (prior radiation no greater than 2,000 cGy): Patients with complete response (CR) or partial response (PR) after completion of chemotherapy receive cyclophosphamide IV over 1 hour on days -6 and -5, followed by total body irradiation twice daily on days -4 to -1. Patients with minimal response after completion of chemotherapy receive cyclophosphamide IV over 1 hour on days -8 and -7, followed by etoposide IV over 30 hours beginning on day -6, followed by total body irradiation twice daily on days -4 to -1.