Donor White Blood Cell Infusions and Interleukin-2 in Treating Patients Who Are Undergoing an Autologous Stem Cell Transplant for Relapsed Advanced Lymphoid Cancer

OBJECTIVES: Primary * Determine the feasibility and toxicity of haploidentical related donor lymphocyte infusions (DLI) and interleukin-2, in terms of acute graft-versus-host-disease, graft failure, and transplant-related mortality, in patients with relapsed advanced lymphoid malignancies undergoing autologous stem cell transplantation. Secondary * Determine the extent, degree, and duration of donor chimerism in patients treated with this regimen. * Determine, preliminarily, activity of haploidentical DLI, as measured by complete response rate, in these patients. OUTLINE: This is a pilot study. Patients receive high-dose melphalan IV over 15-60 minutes on day -2 and undergo autologous stem cell transplantation on day 0. Patients receive haploidentical related donor lymphocyte infusions (DLI) IV on days 1, 5\*, and 10\* and interleukin-2 (IL-2) IV continuously on days 1-12. NOTE: \*DLI are not administered on days 5 or 10 if grade 3 or 4 graft-versus-host disease is present After completion of study treatment, patients are followed monthly for 3 months and then every 3-12 months thereafter. PROJECTED ACCRUAL: A total of 20 patients will be accrued for this study.