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Terms & Definitions

 
Overview
Many words and terms used to describe your treatment may be new to you and sound confusing when you first hear them. This section serves as reference to help you understand these terms. If you feel additional terms should be added or need more explanation, please let us know.

a, b, c, d, e, f, g, h, i, l, m, n, p, r, s, tu, v, w
 
ALL Acute lymphocytic leukemia (acute lymphoblastic leukemia)
Allogeneic transplant A blood or marrow transplant in which the stem cell donor is another person
Alopecia Loss of hair
AML Acute myelogenous leukemia (acute myeloblastic leukemia)
Anemia Decreased red blood cell levels
ANC Absolute neutrophil count. The percentage of white blood cells (WBCs) available to fight infection
Antibiotic A drug used to fight bacterial infections
Antibody A protein produced by the body, in response to a foreign substance, that fights the invading organism
Antiemetic A drug used to control or prevent nausea and vomiting
Antigen A substance that evokes a response from the body’s immune system resulting in the production of antibodies or other defensive action by white blood cells
Apheresis The procedure in which blood is withdrawn from a person and separated into components, some of which is collected separately and the remainder is returned to the person.
Ascites Accumulation of fluid in the abdominal cavity due to liver toxicity
Aspergillus A type of mold that can cause serious infections after blood or marrow transplant
Aspirate To remove by suction, as in a bone marrow aspirate
Autologous transplant A blood or marrow transplant in which the patient’s own stem cells, rather than stem cells from a donor, are infused during transplant
Bacteria Microscopic organisms that infect humans, multiply rapidly, and produce toxins that interfere with normal cell function
Bactrim An antibiotic commonly used to prevent Pneumocystis carinii infection in highly immunosuppressed patients
Bilirubin A pigment produced when the liver detoxifies waste products. Liver problems can result in a high bilirubin level causing yellowing of the skin, called jaundice
Blood typing and cross-matching Blood cells contain factors which are not the same in all people. Before being given a transfusion, blood samples from the donor and the patient are typed or classified (type A, B, AB, O) to match them. Once typed, the samples are cross-matched to double-check that they are compatible
BMT Originally, an abbreviation for "bone marrow transplantation," now refers to "blood and marrow transplantation"
Bone marrow (BM) Spongy tissue in the cavities of large bones, where the body’s blood and immune cells are produced
Bone marrow aspiration and biopsy Procedure used to remove a sample of bone marrow, usually from the rear hip bone, for examination under the microscope
Bone marrow harvest Collection of marrow stem cells through multiple bone marrow aspirations. Cells are withdrawn at the back of the hip bone in the operating room under general anesthesia
Candida A type of yeast, common to the intestine, that can cause infection in immune-compromised patients
CBC Complete blood count. Determines whether the proper number of red blood cells, white blood cells, and platelets are present in the blood
CD 34 positive count A test used to identify stem cells
Chemotherapy A course of treatment that uses drugs to destroy abnormal cells or slow their growth; more specifically, the drugs used in cancer treatment
CGL Chronic granulocytic leukemia, also called CML (chronic myelogenous leukemia)
Clinical Trial An investigation of the effects of materials or methods according to a formal study plan for a particular disease
CLL Chronic lymphocytic leukemia
CML Chronic myelogenous leukemia (chronic granulocytic leukemia – CGL)
Colony stimulating factors Proteins that stimulate the production and growth of certain types of blood cells. For exampleG-CSF (Neupogen) and GM-CSF (Leukine)

Conditioning

The chemotherapy and/or radiation therapy given to the patient before transplant with the intent of killing cancer cells and preparing the bone marrow to receive the transplant
Cryopreservation The process of freezing and preserving a collection of stem cells
Culture Samples of body fluids or tissue that are then allowed to grow in the lab to determine if an infection is present, and if so, the type of organism responsible
Central venous catheter (CVC) Small, flexible plastic tube inserted into a large vein above the heart, through which drugs and blood products can be given and blood samples withdrawn painlessly (also called central line; types – HICKMAN® catheter, GROSHONG®  catheter, Neostar)
Cytomegalovirus A virus that lies dormant and may cause infections after transplant. Patients who have been exposed to and still carry the virus are said to be CMV-positive
DMSO A chemical used to preserve stem cells and prepare them for freezing
Electrocardiogram (EKG or ECG) A test that measures the electrical impulses from the heart
Echocardiogram (Echo) A test that measures the function of the heart, similar to a MUGA scan
Electrolytes (Lytes) Electrically charged particles in the bloodstream. The correct level of each electrolyte is important for the overall functioning of the body. Examples are sodium, potassium, magnesium
Erythrocyte Another name for a red blood cell
Engraftment The time when transplanted stem cells or bone marrow begins to function and produce cells as measured by blood counts
Febrile Having a fever, body temperature that is higher than what is considered standard or "normal"
G-CSF A protein that stimulates the growth and maturation of granuloctyes (also known as Neupogen)
GM-CSF A protein that stimulates the growth and maturation of a wide variety of white blood cells (also known as Leukine)
Graft failure When the patient’s bone marrow does not grow after blood or marrow transplant or begins to grow but then stops
Growth Factor See Colony Stimulating Factors
HEPA filters An air filtration system used to remove particulates and fungi from the air
Herpes simplex virus (HSV) The virus that causes cold sores and genital herpes and causes infection after transplant
High-dose chemotherapy/therapy See conditioning
Immune system The body’s defense mechanism against infection and foreign particles
Immuno-suppression A condition in which the patient’s immune system functions at a lower than normal level, also called immunocompromised
Irradiated blood cells Blood cell transfusions that have been radiated at low levels to destroy white blood cells that could cause immune problems
Leukine See GM-CSF
Metastatic Spread of a disease from the organ or tissue in which it began to another part of the body
Mucositis Irritation and/or sores in the mouth and esophagus caused by chemotherapy and/or radiation
MUGA scan A test that measures the function of the heart, similar to an echocardiogram
Neupogen See G-CSF
Neutropenia Inadequate number of neutrophils defined as an ANC of less than 500. During neutropenia, the immune system is inadequate to defend itself against infection
Neutrophils A type of white blood cell, the body’s primary defense against harmful bacteria
Packed red blood cells (PRBC) A transfusion of red blood cells that may be given when the patient's red blood cell count is low
Pancytopenia An inadequate amount of all types of blood cells
PCA (patient controlled analgesia) A pump that allows the patient to self-administer doses of intravenous pain medications
Peripheral blood stem cells The "parent" cells from which all other cells in the blood develop
Peripheral blood stem cell transplant A procedure in which the patient’s own peripheral blood stem cells are removed, stored and returned to the patient after high-dose chemotherapy to restore bone marrow function. Also called peripheral blood stem cell rescue or support
Platelets (PLTS) Small cells in the blood that help blood to clot to prevent bleeding
Pneumocystis A type of lung infection that can occur during the first year after transplant
Preparative regimen see Conditioning
Protocol A standardized treatment plan
Pulmonary function tests (PFTs) A non-invasive breathing test to determine how well the lungs work
Randomization The random assignment of a patient to a certain treatment in order to compare it to another, like flipping a coin
Red blood cells (RBCs) Blood cells that transport oxygen from the lungs to all parts of the body
Refractory A condition in which cancer does not respond to treatment
Relapse Return of disease after treatment
Remission A condition in which no cancerous cells can be detected
Sepsis The presence of infectious organisms in the blood
Staging Methods used to determine the extent of a patient’s disease
Stem cell "Mother" or "primitive" blood cell from which all other blood cells originate
SWOG (Southwest Oncology Group) One of the largest oncology research cooperative groups in the United States focusing on clinical research in the prevention and cure of cancer in adults.
Syngeneic transplant A blood or marrow transplant in which the stem cell donor is the patient's identical twin
TBI Total body irradiation
Thrombocytopenia Decreased platelet counts
tPA A medication used to dissolve clots in a central venous catheter
TPN (total parenteral nutrition) Fluid infused into a central venous catheter to provide calories, vitamins, and minerals that would normally be received from food (also called hyperalimentation)
Transfusion An infusion of blood products, usually red blood cells or platelets, to support the body while waiting for stem cells to grow
Urokinase A medication used to dissolve clots in a central venous catheter
Varicella-zoster The virus that causes chicken pox (varicella) or shingles (zoster). It may reactivate after transplant and cause infection
Veno-occlusive disease (VOD) A disease that sometimes occurs after high-dose chemotherapy and/or radiation. Small blood vessels in the liver become swollen and clogged. The patient may develop an enlarged, painful liver, increased bilirubin, and ascites
Virus Very small organisms that cause infection by invading other cells

White blood cells(WBCs)

Blood cells that help the body fight infection

BROVIAC® and GROSHONG® are registered trademarks of C.R. Bard, Inc., and its related company BCR, Inc.