bone marrow transplant

bone marrow transplant A procedure in which diseased or damaged bone marrow is replaced with healthy bone marrow. The bone marrow to be replaced may be deliberately destroyed by high doses of chemotherapy and/or radiation therapy. Replacement marrow may come from another person, or the patient’s own marrow may be removed and stored before treatment for later use. When marrow from an unrelated donor is used, the procedure is referred to as allogeneic. If the marrow is from an identical twin, it is termed syngeneic. Autologous bone marrow transplantation uses the patient’s own marrow. Abbreviated BMT. See also transplant.