OUTLINE: This is a dose escalation study of yttrrium Y 90 monoclonal antibody MN-14 (90Y-MN-14). Patients are stratified by prior doxorubicin (yes vs no). Patients receive filgrastim (G-CSF) subcutaneously (SQ) on days -11 to -7 and undergo leukapheresis on days -8 to -6. If an adequate number of CD34+ cells are not harvested, bone marrow is also collected. Patients receive pretherapy targeting consisting of indium In 111 monoclonal antibody MN-14 (In111-MN-14) on day 0. At least 1 confirmed tumor site must be targeted. Patients receive 90Y-MN-14 IV over 30-45 minutes on day 7. Some patients also receive doxorubicin IV on day 8. PBSC or bone marrow is reinfused on approximately day 7-14. Patients also receive G-CSF SQ or IV until blood counts recover. Cohorts of 3-6 patients receive escalating radiological doses of 90Y-MN-14 until the maximum tolerated dose (MTD) is determined. The MTD is defined as either the dose at which no more than 1 of 6 patients experiences dose limiting toxicity or the threshold radiation doses to lungs, kidneys, and liver. Patients are followed weekly for the first month, monthly for 3 months, then every 6 months for up to 5 years.