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Acute myeloid leukemia - adult

Acute myelogenous leukemia; AML; Acute granulocytic leukemia; Acute nonlymphocytic leukemia (ANLL); Leukemia - acute myeloid (AML); Leukemia - acute granulocytic; Leukemia - nonlymphocytic (ANLL)

Acute myeloid leukemia (AML) is cancer that starts inside bone marrow. This is the soft tissue in the center of bones that helps form all blood cells. The cancer grows from cells that would normally turn into white blood cells.

Acute means the disease grows quickly and usually has an aggressive course.

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Causes

AML is one of the most common types of leukemia among adults.

AML is more common in men than women.

The bone marrow helps the body fight infections and makes other blood components. People with AML have many abnormal immature white blood cells inside their bone marrow. The cells grow very quickly, and replace healthy blood cells. As a result, people with AML are more likely to have infections. They also have an increased risk of bleeding as the numbers of healthy blood cells decrease.

Most of the time, a health care provider cannot tell you what caused AML. However, the following things can lead to some types of leukemia, including AML:

• Blood disorders, including polycythemia vera, essential thrombocythemia, and myelodysplasia
• Certain chemicals (for example, benzene)
• Certain chemotherapy drugs, including etoposide and drugs known as alkylating agents
• Exposure to certain chemicals and harmful substances
• Radiation
• Weak immune system due to an organ transplant

Problems with your genes may also cause development of AML.

Symptoms

AML does not have any specific symptoms. Symptoms seen are mainly due to the related conditions. Symptoms of AML may include any of the following:

• Bleeding from the nose
• Bleeding and swelling (rare) in the gums
• Bruising
• Bone pain or tenderness
• Fever and fatigue
• Heavy menstrual periods
• Pale skin
• Shortness of breath (gets worse with exercise)
• Weight loss

Exams and Tests

The provider will perform a physical exam. There may be signs of a swollen spleen, liver, or lymph nodes. Tests done include:

• A complete blood count (CBC) may show anemia and a low number of platelets. A white blood cell count (WBC) can be high, low, or normal.
• Bone marrow aspiration and biopsy will show if there are any leukemia cells.

If your provider learns you do have this type of leukemia, further tests will be done to determine the specific type of AML. Subtypes are based on specific changes in genes (mutations) and how the leukemia cells appear under the microscope.

Treatment

Treatment involves using medicines (chemotherapy) to kill the cancer cells. Most types of AML are treated with more than one chemotherapy medicine. Drugs that are targeted to specific mutations in the leukemic cells are also often used.

Chemotherapy kills normal cells, too. This may cause side effects such as:

• Increased risk of bleeding
• Increased risk for infection (your doctor may want you to keep away from other people to prevent infection)
• Weight loss (you will need to eat extra calories)
• Mouth sores

Other supportive treatments for AML may include:

• Antibiotics to treat infection
• Red blood cell transfusions to fight anemia
• Platelet transfusions to control bleeding

A bone marrow (stem cell) transplant may be tried. This decision is decided by several factors, including:

• Your age and overall health
• Certain genetic changes in the leukemia cells
• The availability of donors

Support Groups

You can ease the stress of illness by joining a cancer support group. Sharing with others who have common experiences and problems can help you not feel alone.

Outlook (Prognosis)

When a bone marrow biopsy shows no evidence of AML, you are said to be in remission. How well you do depends on your overall health and the genetic subtype of the AML cells.

Remission is not the same as a cure. More therapy is usually needed, either in the form of more chemotherapy or a bone marrow transplant.

With treatment, younger people with AML tend to do better than those who develop the disease at an older age. The 5-year survival rate is much lower in older adults than in younger people. Experts say this is partly due to the fact that younger people are better able to tolerate strong chemotherapy medicines. Also, leukemia in older people tends to be more resistant to current treatments.

If the cancer does not come back (relapse) within 5 years of the diagnosis, you are likely cured.

When to Contact a Medical Professional

Call for an appointment with your provider if you:

• Develop symptoms of AML
• Have AML and have a fever that will not go away or other signs of infection

Prevention

If you work around radiation or chemicals linked to leukemia, always wear protective gear.

Related Information

Chemotherapy
Immunodeficiency disorders
Polycythemia vera
Anemia
Bone marrow transplant
Bone marrow transplant - discharge

References

Appelbaum FR. Acute leukemias in adults. In: Niederhuber JE, Armitage JO, Kastan MB, Doroshow JH, Tepper JE, eds. Abeloff's Clinical Oncology. 6th ed. Philadelphia, PA: Elsevier; 2020:chap 95.

Faderl S, Kantarjian HM. Clinical manifestations and treatment of acute myeloid leukemia. In: Hoffman R, Benz EJ, Silberstein LE, et al, eds. Hematology: Basic Principles and Practice. 7th ed. Philadelphia, PA: Elsevier; 2018:chap 59.

National Cancer Institute website. Adult acute myeloid leukemia treatment (PDQ) – health professional version. www.cancer.gov/types/leukemia/hp/adult-aml-treatment-pdq. Updated June 10, 2022. Accessed June 25, 2022.

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Review Date: 4/29/2022  

Reviewed By: Todd Gersten, MD, Hematology/Oncology, Florida Cancer Specialists & Research Institute, Wellington, FL. Review provided by VeriMed Healthcare Network. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.

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