RATIONALE: Drugs used in chemotherapy use different ways to stop cancer cells from dividing so they stop growing or die. Holmium Ho 166 DOTMP may deliver radiation directly to cancer cells and cause less damage to normal tissue. Combining chemotherapy and holmium Ho 166 DOTMP with peripheral stem cell transplantation may allow the doctor to give higher doses of chemotherapy and holmium Ho 166 DOTMP and kill more tumor cells.