Bone marrow transplantation (BCM) is a medical procedure in which a patient's damaged or diseased bone marrow is replaced with healthy bone marrow from a donor. The bone marrow produces blood cells, including red blood cells, white blood cells, and platelets.

TCM can be indicated for various diseases affecting the bone marrow or blood cells, including:

  •  Acute leukemia
  •  Chronic leukemia
  •  Lymphomas
  •  Myelomas
  •  Severe anemia
  •  Immunodeficiency

TCM is usually carried out in several stages:

  • Conditioning: The patient is prescribed chemotherapy or radiation therapy to destroy the diseased bone marrow.
  • Stem cell transfusion: Healthy stem cells from a donor are transferred to a patient through a vein.
  • Engraftment: The stem cells move into the patient's bone marrow and begin to produce new blood cells.
  •  Recovery: The patient is monitored in the hospital until his blood cell levels are restored.

There are two main types of TCM:

  •  Autologous TCM: Stem cells are taken from the patient himself before conditioning begins.
  •  Allogeneic TCM: Stem cells are taken from a healthy donor, who may or may not be a relative of the patient.

TCM is associated with a number of risks and complications, including:

  •  Infection
  •  The bleeding
  •  Graft-versus-host reaction (GVHD)
  •  Organ damage
  •  Death

The prognosis after TCM depends on a number of factors, including the type of disease, the age of the patient, and the general state of health. The success of TCM also depends on the degree of match between the donor and recipient.