OUTLINE: Patients receive flt3 ligand subcutaneously for 14 days followed by 14 days of rest. This course of therapy may be repeated for a total of 3 courses. Leukapheresis is performed on day 15 of the last course of Flt3 ligand. Patients undergo restaging and metastasis resection. Patients are followed every 3 months for the first year, every 6 months for the second year, and yearly thereafter.