Stem cell transplants, also called bone marrow transplants, are when the blood-forming stem cells within a patient's body are replaced with new ones, normally taken from a donor. The goal within this procedure is often to cure the lymphoma after having undergone initial therapy and seeing a recurrence. It can also be a procedure done when a patient would like to live for a long time, but is not a candidate for, or chooses not to have, therapy.
Patients can have success in cell transplantations with either autologous or allogeneic procedures. Autologous is when the patient's own cells are used, and allogeneic is when the cells are taken from a donor.