Leukemia (patient information): Difference between revisions

	Leukemia
Overview
Types of Leukemia
What are the symptoms?
Diagnosis
When to seek urgent medical care?
Treatment options
Diseases with similar symptoms
Where to find medical care for Leukemia?
Prevention
What to expect (Outlook/Prognosis)?
Leukemia On the Web
Ongoing Trials at Clinical Trials.gov
Images of Leukemia
Videos on Leukemia
FDA on Leukemia
CDC on Leukemia
Leukemia in the news
Blogs on Leukemia
Directions to Hospitals Treating Leukemia
Risk calculators and risk factors for Leukemia

VisualWikitext

Latest revision as of 16:12, 8 April 2019

For the WikiDoc page for this topic, click here

For the WikiDoc page on CLL, click here; For the WikiDoc page on CML, click here

For the WikiDoc page on ALL, click here; For the WikiDoc page on AML, click here

Editor-In-Chief: C. Michael Gibson, M.S., M.D. Associate Editor-In-Chief: Jinhui Wu, M.D., Michael Andrew Gibson; Grammar Reviewer: Natalie Harpenau, B.S.[1]

Overview

Leukemia is a cancer that starts in the tissue that forms blood. To understand cancer, it helps to know how normal blood cells form. Most blood cells develop from cells in the bone marrow called stem cells. Bone marrow is the soft material in the center of most bones. Stem cells mature into different kinds of blood cells, and each kind has a special job. White blood cells help fight infection - there are several kinds of these cells. Red blood cells carry oxygen to tissues throughout the body. Platelets help form blood clots that control bleeding. White blood cells, red blood cells, and platelets are made from stem cells as the body needs them. When cells grow old or get damaged, they die, and new cells take their place.

In a person with leukemia, the bone marrow makes abnormal white blood cell, also known as leukemic cells. Unlike normal blood cells, leukemia cells do not die when they should. They may crowd out normal white blood cells, red blood cells, and platelets. This makes it hard for normal blood cells to do their work.

Types of Leukemia

The types of leukemia are grouped based on how quickly the disease develops and progressively worsens. Leukemia is either chronic (worsens slowly) or acute (worsens quickly):

Chronic leukemia:

Early in the disease, the leukemia cells can still do some of the work of normal white blood cells. People may not have any obvious symptoms at first. Doctors often find chronic leukemia during a routine checkup - before there are any symptoms. Slowly, chronic leukemia gets worse. As the number of leukemia cells in the blood increases,the symptoms become more apparent, such as swollen lymph nodes or infections. When symptoms do appear, they are usually mild at first and gradually worsen with time.

Acute leukemia:

The leukemia cells can't do any of the work of normal white blood cells. The number of leukemia cells increases rapidly. Acute leukemia usually worsens quickly. The types of leukemia also can be grouped based on the type of white blood cell that is affected. Leukemia can start in lymphoid cells or myeloid cells. Leukemia that affects lymphoid cells is called lymphoid, lymphocytic, or lymphoblastic leukemia. Leukemia that affects myeloid cells is called myeloid, myelogenous, or myeloblastic leukemia.

There are four common types of leukemia:

Chronic lymphocytic leukemia (CLL):

CLL affects lymphoid cells and usually grows slowly. It accounts for more than 15,000 new cases of leukemia each year. Most often, people diagnosed with the disease are over age 55. It almost never affects children.

Chronic myeloid leukemia (CML):

CML affects myeloid cells and usually grows slowly at first. It accounts for nearly 5,000 new cases of leukemia each year. It mainly affects adults.

Acute lymphocytic (lymphoblastic) leukemia (ALL):

ALL affects lymphoid cells and grows quickly. It accounts for more than 5,000 new cases of leukemia each year. ALL is the most common type of leukemia in young children. It also affects adults.

Acute myeloid leukemia (AML):

AML affects myeloid cells and grows quickly. It accounts for more than 13,000 new cases of leukemia each year. It occurs in both adults and children.

What are the symptoms of leukemia?

Like all blood cells, leukemia cells travel through the body. The symptoms of leukemia depend on the number of leukemia cells and where these cells collect in the body.

People with chronic leukemia may not have symptoms. The doctor may find the disease during a routine blood test.

People with acute leukemia usually go to their doctor because they feel sick. If the brain is affected, they may have headaches, vomiting, confusion, loss of muscle control, or seizures. Leukemia also can affect other parts of the body such as the digestive tract, kidneys, lungs, heart, or testes.

Common symptoms of chronic or acute leukemia may include:

Swollen lymph nodes that usually don't hurt (especially lymph nodes in the neck or armpit)
Fever or night sweat
Frequent infections
Feeling weak or tired
Bleeding and bruising easily (bleeding gums, purplish patches in the skin, or tiny red spots under the skin)
Swelling or discomfort in the abdomen (from a swollen spleen or liver)
Weight loss for no known reason
Pain in the bones or joints

When to seek Urgent Medical Care?

If you have leukemia, and have received chemotherapy, you may develop a fever that may reflect the fact that your blood counts are low, and you should seek medical care for antibiotics.

Diagnosis

Doctors sometimes find leukemia after a routine blood test. If you have symptoms that suggest leukemia, your doctor will try to find out what is causing the problems. Your doctor may ask about your personal and family medical history.

You may have one or more of the following tests:

Physical exam: Your doctor checks for swollen lymph nodes, spleen, or liver.
Blood tests: The lab does a complete blood count to check the number of white blood cells, red blood cells, and platelets. Leukemia causes a very high level of white blood cells. It may also cause low levels of platelets and hemoglobin, which is found inside red blood cells.
Biopsy: Your doctor removes tissue to look for cancer cells. A biopsy is the only sure way to know whether leukemia cells are in your bone marrow. Before the sample is taken, local anesthesia is used to numb the area. This helps reduce the pain. Your doctor removes some bone marrow from your hipbone or another large bone. A pathologist uses a microscope to check the tissue for leukemia cells.

The tests that your doctor orders for you depend on your symptoms and type of leukemia. You may have other, less common tests:

Cytogenetics: The lab looks at the chromosomes of cells from samples of blood, bone marrow, or lymph nodes. If abnormal chromosomes are found, the test can show what type of leukemia you have. (For example, people with CML have an abnormal chromosome called the Philadelphia chromosome.)
Spinal tap: Your doctor may remove some of the cerebrospinal fluid (a fluid that fills the spaces in and around the brain and spinal cord). The doctor uses a long, thin needle to remove fluid from the lower spine. The procedure takes about 30 minutes and is performed with local anesthesia. You must lie flat for several hours afterward to prevent a headache from occurring. The lab checks the fluid for leukemia cells or other signs of problems.
Chest x-ray: An x-ray can show swollen lymph nodes or other signs of disease in your chest.

Treatment Options

Unlike other types of cancer, leukemia isn't a tumor that your doctor can surgically remove. Leukemia cells are produced in the bone marrow and travel throughout the body. There are several treatment options for leukemia. Every treatment option has side-effects and drawbacks. Be sure to consult with your doctor about which one is right for you.

Radiation Therapy:

Radiation therapy (also called radiotherapy) uses high-energy rays to kill leukemia cells. People receive radiation therapy at a hospital or clinic. Some people receive radiation from a large machine that is aimed at the spleen, the brain, or other parts of the body where leukemia cells have collected. For more information see Radiation therapy.

Chemotherapy:

Many people with leukemia are treated with chemotherapy. Chemotherapy uses drugs to destroy leukemia cells. For more information see Chemotherapy.

Biological Therapy:

Biological therapy uses special substances that improve the body's natural defenses against cancer. Some patients with chronic lymphocytic leukemia receive monoclonal antibodies, which are man-made proteins that can identify leukemia cells. Monoclonal antibodies bind to the cells and assist the body in killing them.

Targeted Therapy:

People with chronic myeloid leukemia and some with acute lymphoblastic leukemia may receive drugs called targeted therapy.Targeted therapies use drugs that block the growth of leukemia cells. (For example, a targeted therapy may block the action of an abnormal protein that stimulates the growth of leukemia cells.)

Stem Cell Transplant:

Some people with leukemia receive a stem cell transplant. A stem cell transplant allows you to be treated with high doses of drugs, radiation or both. The high doses destroy both leukemia cells and normal blood cells in the bone marrow. After you receive high-dose chemotherapy, radiation therapy, or both, then you receive healthy stem cells through a large vein; it is similar to getting a blood transfusion. New blood cells develop from the transplanted stem cells. The new blood cells replace the ones that were destroyed by treatment.

Diseases with similar symptoms

Where to get Medical Care for leukemia?

Directions to Hospitals Treating Leukemia

Prevention

There are certain activities and events that can lead to an increased risk for leukemia. Try to avoid:

Smoking
Exposure to the chemical Benzene
Exposure to large amounts of radiation

Other factors that point to a higher risk for leukemia include:

Chemotherapy, Down syndrome and certain other inherited diseases
Myelodysplastic syndrome and certain other blood disorders
Family history of leukemia
Infection with the Human T-cell leukemia virus type I (HTLV-I)

What to Expect (Outlook/Prognosis)?

Leukemia is a very serious disease that can result in many complications. Complications can come from the disease itself and the treatments. Acute leukemia has a much quicker and more dramatic onset but can occasionally be cured. Chronic Leukemia has a slower onset and can often be put off for years; however, chronic leukemia is very rarely cured.

Sources

Cancer.org

Medlineplus

Template:WH Template:WS

@@ Line 1: / Line 1: @@
 '''For the WikiDoc page for this topic, click [[Leukemia|here]]'''
-'''For the WikiDoc page on CML, click [[Chronic monocytic leukemia|here]]'''
+'''For the WikiDoc page on CLL, click [[Chronic lymphocytic leukemia|here]]'''; '''For the WikiDoc page on CML, click [[Chronic myelogenous leukemia|here]]'''
+'''For the WikiDoc page on ALL, click [[Acute lymphoblastic leukemia|here]]'''; '''For the WikiDoc page on AML, click [[Acute myeloid leukemia|here]]'''
-{{DiseaseDisorder infobox |
-  Name           = Leukemia |
-  ICD10          = {{ICD10|C|91||c|81}}-{{ICD10|C|95||c|81}} |
-  ICD9           = {{ICD9|208.9}} |
-  ICDO           = 9800-9940 |
-  OMIM           = |
-  MedlinePlus    = 001299 |
-  DiseasesDB     = 7431 |
-  MeshID         = D007938 |
-}}
 {{Leukemia (patient information)}}
-'''Editor-in-Chief:''' [[C. Michael Gibson]], M.S.,M.D. [mailto:mgibson@perfuse.org]  Phone:617-632-7753; '''Associate Editor-In-Chief:''' Jinhui Wu, M.D.; '''Assistant Editor-In-Chief:''' [[Michael Andrew Gibson]] [mailto:m_gibson@mit.edu]
+'''Editor-In-Chief:''' [[C. Michael Gibson, M.S., M.D.]] '''Associate Editor-In-Chief:''' Jinhui Wu, M.D., [[Michael Andrew Gibson]]; {{GRR}} {{Nat}}
 ==Overview==
-Leukemia is cancer that starts in the tissue that forms blood. To understand cancer, it helps to know how normal blood cells form. Most blood cells develop from cells in the bone marrow called stem cells. Bone marrow is the soft material in the center of most bones.
+Leukemia is a cancer that starts in the tissue that forms blood. To understand cancer, it helps to know how normal blood cells form. Most blood cells develop from cells in the bone marrow called [[stem cells]]. Bone marrow is the soft material in the center of most bones. Stem cells mature into different kinds of blood cells, and each kind has a special job. [[White blood cells]] help fight infection - there are several kinds of these cells. [[Red blood cells]] carry oxygen to tissues throughout the body. [[Platelets]] help form blood clots that control bleeding. White blood cells, red blood cells, and platelets are made from stem cells as the body needs them. When cells grow old or get damaged, they die, and new cells take their place.
-Stem cells mature into different kinds of blood cells. Each kind has a special job:
-	White blood cells help fight infection. There are several types of white blood cells.
-	Red blood cells carry oxygen to tissues throughout the body.
-	Platelets help form blood clots that control bleeding.
-White blood cells, red blood cells, and platelets are made from stem cells as the body needs them. When cells grow old or get damaged, they die, and new cells take their place.
-In a person with leukemia, the bone marrow makes abnormal white blood cells. The abnormal cells are leukemia cells. Unlike normal blood cells, leukemia cells don't die when they should. They may crowd out normal white blood cells, red blood cells, and platelets. This makes it hard for normal blood cells to do their work.
+In a person with leukemia, the bone marrow makes abnormal white blood cell, also known as [[leukemic]] cells. Unlike normal blood cells, leukemia cells do not die when they should. They may crowd out normal white blood cells, red blood cells, and platelets. This makes it hard for normal blood cells to do their work.
 ==Types of Leukemia==
-The types of leukemia can be grouped based on how quickly the disease develops and gets worse. Leukemia is either chronic (which usually gets worse slowly) or acute (which usually gets worse quickly):
+The types of leukemia are grouped based on how quickly the disease develops and progressively worsens. Leukemia is either chronic (worsens slowly) or acute (worsens quickly):
-===Chronic leukemia:===
+===[[Chronic leukemia]]:===
-Early in the disease, the leukemia cells can still do some of the work of normal white blood cells. People may not have any symptoms at first. Doctors often find chronic leukemia during a routine checkup - before there are any symptoms. Slowly, chronic leukemia gets worse. As the number of leukemia cells in the blood increases, people get symptoms, such as swollen lymph nodes or infections. When symptoms do appear, they are usually mild at first and get worse gradually.
+Early in the disease, the leukemia cells can still do some of the work of normal white blood cells. People may not have any obvious symptoms at first. Doctors often find chronic leukemia during a routine checkup - before there are any symptoms. Slowly, chronic leukemia gets worse. As the number of leukemia cells in the blood increases,the symptoms become more apparent, such as [[swollen lymph nodes]] or infections. When symptoms do appear, they are usually mild at first and gradually worsen with time.
-===Acute leukemia:===
+===[[Acute leukemia]]:===
-The leukemia cells can't do any of the work of normal white blood cells. The number of leukemia cells increases rapidly. Acute leukemia usually worsens quickly.
+The leukemia cells can't do any of the work of normal white blood cells. The number of leukemia cells increases rapidly. Acute leukemia usually worsens quickly. The types of leukemia also can be grouped based on the type of white blood cell that is affected. Leukemia can start in lymphoid cells or [[myeloid cells]]. Leukemia that affects lymphoid cells is called [[lymphoid]], [[lymphocytic]], or lymphoblastic leukemia. Leukemia that affects myeloid cells is called [[myeloid]], myelogenous, or myeloblastic leukemia.
-The types of leukemia also can be grouped based on the type of white blood cell that is affected. Leukemia can start in lymphoid cells or myeloid cells. See the picture of these cells. Leukemia that affects lymphoid cells is called lymphoid, lymphocytic, or lymphoblastic leukemia. Leukemia that affects myeloid cells is called myeloid, myelogenous, or myeloblastic leukemia.
 There are four common types of leukemia:
-====Chronic lymphocytic leukemia (CLL):====
+====Chronic lymphocytic leukemia ([[Chronic lymphocytic leukemia|CLL]]):====
-CLL affects lymphoid cells and usually grows slowly. It accounts for more than 15,000 new cases of leukemia each year. Most often, people diagnosed with the disease are over age 55. It almost never affects children.
+[[Chronic lymphocytic leukemia|CLL]] affects lymphoid cells and usually grows slowly. It accounts for more than 15,000 new cases of leukemia each year. Most often, people diagnosed with the disease are over age 55. It almost never affects children.
-====Chronic myeloid leukemia (CML):====
+====Chronic myeloid leukemia ([[Chronic myelogenous leukemia|CML]]):====
-CML affects myeloid cells and usually grows slowly at first. It accounts for nearly 5,000 new cases of leukemia each year. It mainly affects adults.
+[[Chronic myelogenous leukemia|CML]] affects myeloid cells and usually grows slowly at first. It accounts for nearly 5,000 new cases of leukemia each year. It mainly affects adults.
-====Acute lymphocytic (lymphoblastic) leukemia (ALL):====
+====Acute lymphocytic (lymphoblastic) leukemia ([[Acute lymphoblastic leukemia|ALL]]):====
-ALL affects lymphoid cells and grows quickly. It accounts for more than 5,000 new cases of leukemia each year. ALL is the most common type of leukemia in young children. It also affects adults.
+[[Acute lymphoblastic leukemia|ALL]] affects lymphoid cells and grows quickly. It accounts for more than 5,000 new cases of leukemia each year. ALL is the most common type of leukemia in young children. It also affects adults.
-====Acute myeloid leukemia (AML):====
+====Acute myeloid leukemia ([[AML]]):====
-AML affects myeloid cells and grows quickly. It accounts for more than 13,000 new cases of leukemia each year. It occurs in both adults and children.
+[[Acute myeloid leukemia|AML]] affects myeloid cells and grows quickly. It accounts for more than 13,000 new cases of leukemia each year. It occurs in both adults and children.
 ==What are the symptoms of leukemia?==
@@ Line 62: / Line 47: @@
 '''Common symptoms''' of chronic or acute leukemia may include:
+* [[Lymphadenopathy|Swollen lymph nodes]] that usually don't hurt (especially lymph nodes in the neck or armpit)
--Swollen lymph nodes that usually don't hurt (especially lymph nodes in the neck or armpit)
+* [[Fever]] or [[night sweat]]
+* Frequent infections
--[[Fever]] or [[night sweat]]
+* Feeling weak or tired
+* [[Bleeding]] and bruising easily (bleeding gums, purplish patches in the skin, or tiny red spots under the skin)
--Frequent infections
+* Swelling or discomfort in the abdomen (from a swollen spleen or liver)
+* [[Weight loss]] for no known reason
--Feeling weak or tired
+* [[Pain]] in the bones or joints
--[[Bleeding]] and bruising easily (bleeding gums, purplish patches in the skin, or tiny red spots under the skin)
--Swelling or discomfort in the abdomen (from a swollen spleen or liver)
--[[Weight loss]] for no known reason
--[[Pain]] in the bones or joints
 ==When to seek Urgent Medical Care?==
-If you have leukemia, and have received chemotherapy, you may develop a [[fever]] that may reflect the fact that your blood counts are low and you should seek medical care for antibiotics.
+If you have leukemia, and have received chemotherapy, you may develop a [[fever]] that may reflect the fact that your blood counts are low, and you should seek medical care for antibiotics.
 ==Diagnosis==
-Doctors sometimes find leukemia after a routine blood test. If you have symptoms that suggest leukemia, your doctor will try to find out what's causing the problems. Your doctor may ask about your personal and family medical history.
+Doctors sometimes find leukemia after a routine blood test. If you have symptoms that suggest leukemia, your doctor will try to find out what is causing the problems. Your doctor may ask about your personal and family medical history.
 You may have one or more of the following tests:
+* ''[[Physical examination|Physical exam]]:'' Your doctor checks for swollen lymph nodes, spleen, or liver.
-''Physical exam:'' Your doctor checks for swollen lymph nodes, spleen, or liver.
+* ''[[Blood test|Blood tests]]:'' The lab does a complete blood count to check the number of white blood cells, red blood cells, and platelets. Leukemia causes a very high level of white blood cells. It may also cause low levels of platelets and hemoglobin, which is found inside red blood cells.
+* ''[[Biopsy]]:'' Your doctor removes tissue to look for cancer cells. A [[biopsy]] is the only sure way to know whether leukemia cells are in your bone marrow. Before the sample is taken, local anesthesia is used to numb the area. This helps reduce the pain. Your doctor removes some bone marrow from your hipbone or another large bone. A pathologist uses a microscope to check the tissue for leukemia cells.
-''Blood tests:'' The lab does a complete blood count to check the number of white blood cells, red blood cells, and platelets. Leukemia causes a very high level of white blood cells. It may also cause low levels of platelets and hemoglobin, which is found inside red blood cells.
-''Biopsy:'' Your doctor removes tissue to look for cancer cells. A [[biopsy]] is the only sure way to know whether leukemia cells are in your bone marrow. Before the sample is taken, local anesthesia is used to numb the area. This helps reduce the pain. Your doctor removes some bone marrow from your hipbone or another large bone. A pathologist uses a microscope to check the tissue for leukemia cells.
 The tests that your doctor orders for you depend on your symptoms and type of leukemia. You may have other, less common tests:
+* ''[[Cytogenetics]]:'' The lab looks at the chromosomes of cells from samples of blood, bone marrow, or lymph nodes. If abnormal chromosomes are found, the test can show what type of leukemia you have. (For example, people with [[Chronic myelogenous leukemia|CML]] have an abnormal chromosome called the Philadelphia chromosome.)
-''Cytogenetics:'' The lab looks at the chromosomes of cells from samples of blood, bone marrow, or lymph nodes. If abnormal chromosomes are found, the test can show what type of leukemia you have. For example, people with CML have an abnormal chromosome called the Philadelphia chromosome.
+* ''[[Lumbar puncture|Spinal tap]]:'' Your doctor may remove some of the [[cerebrospinal fluid]] (a fluid that fills the spaces in and around the brain and spinal cord). The doctor uses a long, thin needle to remove fluid from the lower spine. The procedure takes about 30 minutes and is performed with local anesthesia. You must lie flat for several hours afterward to prevent a headache from occurring. The lab checks the fluid for leukemia cells or other signs of problems.
+* ''[[Chest X-ray|Chest x-ray]]:'' An x-ray can show swollen lymph nodes or other signs of disease in your chest.
-''Spinal tap:'' Your doctor may remove some of the cerebrospinal fluid (the fluid that fills the spaces in and around the brain and spinal cord). The doctor uses a long, thin needle to remove fluid from the lower spine. The procedure takes about 30 minutes and is performed with local anesthesia. You must lie flat for several hours afterward to keep from getting a headache. The lab checks the fluid for leukemia cells or other signs of problems.
-''Chest x-ray:'' An x-ray can show swollen lymph nodes or other signs of disease in your chest.
 ==Treatment Options==
-Unlike other types of cancer, leukemia isn't a tumor that your doctor can surgically remove. Leukemia cells are produced in the bone marrow and travel throughout the body.
+Unlike other types of cancer, leukemia isn't a tumor that your doctor can surgically remove. Leukemia cells are produced in the bone marrow and travel throughout the body. There are several treatment options for leukemia. Every treatment option has side-effects and drawbacks. Be sure to consult with your doctor about which one is right for you.
-There are several treatment options for leukemia. Every treatment option has side effects and drawbacks. Be sure to consult with your doctor about which one is right for you.
 '''Radiation Therapy:'''
-[[Radiation therapy]] (also called radiotherapy) uses high-energy rays to kill leukemia cells. People receive radiation therapy at a hospital or clinic. Some people receive radiation from a large machine that is aimed at the spleen, the brain, or other parts of the body where leukemia cells have collected. For more information see [[Radiation therapy]]
+[[Radiation therapy]] (also called radiotherapy) uses high-energy rays to kill leukemia cells. People receive radiation therapy at a hospital or clinic. Some people receive radiation from a large machine that is aimed at the spleen, the brain, or other parts of the body where leukemia cells have collected. For more information see [[Radiation therapy]].
 '''Chemotherapy:'''
@@ Line 115: / Line 84: @@
 '''Biological Therapy:'''
-Biological therapy uses special substances that improve the body's natural defenses against cancer. Some patients with chronic lymphocytic leukemia receive monoclonal antibodies, which are man-made proteins that can identify leukemia cells. Monoclonal antibodies bind to the cells and assist the body in killing them.
+[[Biological therapy]] uses special substances that improve the body's natural defenses against cancer. Some patients with chronic lymphocytic leukemia receive monoclonal antibodies, which are man-made proteins that can identify leukemia cells. [[Monoclonal antibodies]] bind to the cells and assist the body in killing them.
 '''Targeted Therapy:'''
-People with chronic myeloid leukemia and some with acute lymphoblastic leukemia may receive drugs called targeted therapy.Targeted therapies use drugs that block the growth of leukemia cells. For example, a targeted therapy may block the action of an abnormal protein that stimulates the growth of leukemia cells.
+People with chronic myeloid leukemia and some with acute lymphoblastic leukemia may receive drugs called [[targeted therapy]].Targeted therapies use drugs that block the growth of leukemia cells. (For example, a targeted therapy may block the action of an abnormal protein that stimulates the growth of leukemia cells.)
 '''Stem Cell Transplant:'''
-Some people with leukemia receive a [[stem cell transplant]]. A stem cell transplant allows you to be treated with high doses of drugs, radiation, or both. The high doses destroy both leukemia cells and normal blood cells in the bone marrow. After you receive highdose chemotherapy, radiation therapy, or both, you receive healthy stem cells through a large vein. (It's like getting a blood transfusion.) New blood cells develop from the transplanted stem cells. The new blood cells replace the ones that were destroyed by treatment.
+Some people with leukemia receive a [[stem cell transplant]]. A stem cell transplant allows you to be treated with high doses of drugs, radiation or both. The high doses destroy both leukemia cells and normal blood cells in the bone marrow. After you receive high-dose chemotherapy, radiation therapy, or both, then you receive healthy stem cells through a large vein; it is similar to getting a [[blood transfusion]]. New blood cells develop from the transplanted stem cells. The new blood cells replace the ones that were destroyed by treatment.
 ==Diseases with similar symptoms==
@@ Line 137: / Line 106: @@
 ==Prevention==
-There are certain activities and events which can lead to an increased risk for leukemia. Try to avoid:
+There are certain activities and events that can lead to an increased risk for leukemia. Try to avoid:
+* Smoking
--Smoking
+* Exposure to the chemical [[Benzene]]
+* Exposure to large amounts of radiation
--Exposure to the chemical Benzene
--Exposure to large amounts of radiation
 Other factors that point to a higher risk for leukemia include:
--Chemotherapy
+* [[Chemotherapy]], [[Down syndrome (patient information)|Down syndrome]] and certain other inherited diseases
--Down syndrome and certain other inherited diseases
+* [[Myelodysplastic syndrome (patient information)|Myelodysplastic syndrome]] and certain other blood disorders
--Myelodysplastic syndrome and certain other blood disorders
+* Family history of leukemia
--Family history of leukemia
+* Infection with the Human T-cell leukemia virus type I ([[HTLV-I-associated myelopathy|HTLV-I]])
--Infection with the Human T-cell leukemia virus type I (HTLV-I)
-==What to Expect (Outook/Prognosis)?==
+==What to Expect (Outlook/Prognosis)?==
-Leukemia is a very serious disease which can have many complications. Complications can come from the disease itself and the treatments. Acute leukemia has a much quicker and more dramatic onset, but can sometimes be cured. Chronic Leukiemia has a slower onset and can often be put off for years. However, chronic leukemia is very rarely cured.
+Leukemia is a very serious disease that can result in many complications. Complications can come from the disease itself and the treatments. Acute leukemia has a much quicker and more dramatic onset but can occasionally be cured. Chronic Leukemia has a slower onset and can often be put off for years; however, chronic leukemia is very rarely cured.
 ==Sources==
@@ Line 165: / Line 129: @@
 {{WS}}
-[[Category:Disease]]
-[[Category:Oncology]]
-[[Category:Hematology]]
 [[Category:Patient information]]
 [[Category:Oncology patient information]]
 [[Category:Hematology patient information]]
 [[Category:Mature chapter]]
+ [[Category:Up-To-Date]]
+[[Category:Oncology]]
+[[Category:Medicine]]
+[[Category:Hematology]]
+[[Category:Immunology]]
+ [[Category:Up-To-Date]]
+[[Category:Oncology]]
+[[Category:Medicine]]
+[[Category:Hematology]]
+[[Category:Immunology]]
+ [[Category:Up-To-Date]]
+[[Category:Oncology]]
+[[Category:Medicine]]
+[[Category:Hematology]]
+[[Category:Immunology]]
+ [[Category:Up-To-Date]]
+[[Category:Oncology]]
+[[Category:Medicine]]
+[[Category:Hematology]]
+[[Category:Immunology]]
+ [[Category:Up-To-Date]]
+[[Category:Oncology]]
+[[Category:Medicine]]
+[[Category:Hematology]]
+[[Category:Immunology]]
+ [[Category:Up-To-Date]]
+[[Category:Oncology]]
+[[Category:Medicine]]
+[[Category:Hematology]]
+[[Category:Immunology]]
+ [[Category:Up-To-Date]]
+[[Category:Oncology]]
+[[Category:Medicine]]
+[[Category:Hematology]]
+[[Category:Immunology]]