RATIONALE: Drugs used in chemotherapy use different ways to stop tumor cells from dividing so they stop growing or die. Radiation therapy uses high-energy x-rays to damage tumor cells. Peripheral stem cell transplantation may be able to replace immune cells that were destroyed by chemotherapy or radiation therapy. Sometimes the transplanted cells are rejected by the body's normal tissues. Cyclosporine, mycophenolate mofetil, methotrexate, and tacrolimus may prevent this from happening.