OUTLINE: This is a dose escalation study of yttrium Y 90 labeled 2IT-BAD monoclonal antibody 170 (90Y-2IT-BAD-m170). Patients are stratified according to risk based on prior therapy (standard combined chemotherapy vs standard and high dose combined chemotherapy with bone marrow transplant or stem cell support). All patients receive subcutaneous filgrastim (G-CSF) during stem cell collection. Beginning 3 to 5 days after starting G-CSF, patients undergo apheresis either daily or every other day for 4 to 8 procedures. Patients receive oral cyclosporine twice daily, starting on day 1, for up to 2 weeks. On day 4, patients receive nonlabeled 2IT-BAD monoclonal antibody m170 IV over 10-15 minutes, followed 15 minutes later by indium In 111 labeled 2IT-BAD monoclonal antibody 170 (111In-2IT-BAD-m170) IV over 10-15 minutes. Patients then undergo dosimetry imaging immediately, again 3 hours later, and then on days 1-4 and day 7 postinjection. Patients receive nonlabeled monoclonal antibody IV over 10-15 minutes, followed 15 minutes later by In 111/Y 90 labeled 2IT-BAD monoclonal antibody 170 (111In/90Y-2IT-BAD-m170) IV over 10-15 minutes, then undergo imaging as in pretherapy. Patients also receive cyclosporine, administered as in pretherapy, for a total of 35 days, plus autologous stem cell support followed by G-CSF after each course. Cohorts of 3-9 patients receive escalating doses of 111In/90Y-2IT-BAD-m170. Patients proceed to the next dose level if 3 or more patients in the same or higher risk group have not reached the maximum tolerated, nonmarrow, normal tissue dose (MTNTD) at least 3 months after the second course of therapy. Therapy repeats every 3 months for 3 courses.