POST-TRANSPLANT THERAPY: All patients receive tamoxifen citrate* PO once daily beginning prior to aldesleukin (IL-2) and sargramostim (GM-CSF) therapy and continuing for 5 years or until relapse (estrogen receptor [ER]- or progesterone receptor [PR]-positive patients) OR until completion of IL-2/GM-CSF therapy (ER-negative or PR-negative patients). Eligible patients receive IL-2 subcutaneously (SC) daily and GM-CSF SC 3 times weekly for 12 weeks beginning 30-100 days after transplantation. Patients may receive radiotherapy after completion of IL-2/GM-CSF treatment if no prior radiotherapy was given before transplantation.