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Most stem cells
are in your
bone marrow. You also have some in your blood that
circulate from your bone marrow. Bone marrow stem cells turn into
red blood cells,
white blood cells, or
platelets to help your body stay healthy. If your bone
marrow is attacked by a disease such as multiple myeloma, it can no longer make normal
blood cells. In a stem cell transplant, healthy stem cells are placed in your
body through an
IV to help your bone marrow start to work right.
When the stem cells come from your own blood or bone marrow, it
is called an autologous transplant.
transplants are used to:
Other uses for stem cells are being studied, such as the
sickle cell disease, and
Your doctor will consider your overall health and
your age. People who are good candidates usually are younger than 70, do not
have other diseases such as heart disease or diabetes, and have a normal kidney
and liver. Your doctor will also consider how much your disease has grown and
how aggressive your cancer is. People with aggressive cancer that has spread to
many areas of the body are not usually thought to be good candidates. Your
doctor may also consider whether you have cancer that has come back, such as
relapsed non-Hodgkin's lymphoma.
Autologous stem cell transplants are done using peripheral blood stem cell transplantation (PBSCT). With PBSCT, the stem cells are taken from blood. The growth factor G-CSF may be used to
stimulate the growth of new stem cells so they spill over into the blood. G-CSF is a protein that is
produced naturally in the body. The blood is removed from a vein and passed
through a machine that separates the stem cells. The machine then returns the
remaining blood through a needle in the person's arm or through a
central venous catheter. This way of collecting stem
cells is called
In adults, most autologous
transplants use stem cells from blood. In a child, the decision whether to use
cells from the bone marrow or the blood depends on the size of the
Before you have chemotherapy and radiation, you have
blood taken and stored (banked) for later. Then you have chemotherapy and
radiation to destroy the diseased cells in your bone marrow and the rest of
your body. This gets rid of the cancer cells in your bone marrow. Later, when
you get your stored blood cells back, those new stem cells will be able to take
over the job of making new blood cells.
A central venous
catheter is inserted in your chest. The stem cells travel from the blood bag
through the catheter into your blood, and to your bone marrow, where they will
begin to produce new cells in 1 to 3 weeks. During this time:
Some people are able to receive
part or even all of their treatment in an outpatient clinic. Even if you need
to be in a hospital, you will not usually have to stay longer than 3
Severe, often life-threatening infection can develop after
a stem cell transplant. You will need to take antibiotics for several months to
Your immune system may take 1 to 2 years or
longer to recover after a transplant.
Bone marrow aspiration or biopsy is used to check your
bone marrow. You will need to have many immunizations updated. Check with your
doctor to find out which immunizations you will need.
Autologous stem cell transplant is
The success of a transplant depends
on the type and stage of the disease and your age and general health.
The original disease may come back after the transplant. If relapse
occurs after autologous transplant, chemotherapy or other treatments may be
Early complications usually occur within 5 to 10
days and include:
Other possible complications include:
Using your own
stem cells in a transplant is safer than using someone else's, because your
body will not reject your own stem cells. But stem cells from your own marrow or
blood may still contain some cancer cells. So the stem cells may be treated to get rid of any cancer cells before being put back into your body.
Not every hospital is able
to perform transplants. You may have to travel to a hospital that has special
equipment and specially trained doctors and nurses.
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ByHealthwise StaffPrimary Medical ReviewerAnne C. Poinier, MD - Internal MedicineSpecialist Medical ReviewerDouglas A. Stewart, MD - Medical Oncology
Current as ofNovember 14, 2014
Current as of:
November 14, 2014
Anne C. Poinier, MD - Internal Medicine
& Douglas A. Stewart, MD - Medical Oncology
How this information was developed to help you make better health decisions.
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