Vaccine Therapy With or Without Cyclophosphamide and Doxorubicin in Women With Stage IV Breast Cancer

RATIONALE: Vaccines made from a person's tumor cells may make the body build an immune response to kill tumor cells. Drugs used in chemotherapy, such as cyclophosphamide and doxorubicin, work in different ways to stop tumor cells from dividing so they stop growing or die. Combining vaccine therapy with cyclophosphamide and doxorubicin may kill more tumor cells. PURPOSE: This phase I trial is studying the side effects and best dose of cyclophosphamide and doxorubicin when given with vaccine therapy in treating women with stage IV breast cancer.