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Leukemia
     
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Leukemia

 

Leukemia is a type of blood cancer that begins in the bone marrow. Bone marrow is the soft tissue in the center of the bones, where blood cells are produced.

The term leukemia means white blood. White blood cells (leukocytes) fight infections and other foreign substances. Leukocytes are made in the bone marrow.

Leukemia leads to an uncontrolled increase in the number of white blood cells.

The cancerous cells prevent healthy red cells, platelets, and mature white cells (leukocytes) from being made. Life-threatening symptoms can then develop as normal blood cells decline.

The cancer cells can spread to the bloodstream and lymph nodes. They can also travel to the brain and spinal cord (the central nervous system) and other parts of the body.

Leukemia can affect children and adults.

Leukemias are divided into two major types:

  • Acute (which progresses quickly)
  • Chronic (which progresses more slowly)

The main types of leukemia are:

  • Acute lymphocytic leukemia (ALL)
  • Acute myeloid leukemia (AML)
  • Chronic lymphocytic leukemia (CLL)
  • Chronic myeloid leukemia (CML)

 

Open References

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.

Brown JR. Chronic lymphocytic leukemia. In: Goldman L, Cooney KA, eds. Goldman-Cecil Medicine. 27th ed. Philadelphia, PA: Elsevier; 2024:chap 169.

Hunger SP, Teachey DT, Grupp S, Aplenc R. Childhood leukemia. In: Niederhuber JE, Armitage JO, Kastan MB, Doroshow JH, Tepper JE, eds. Abeloff's Clinical Oncology. 6th ed. Philadelphia, PA: Elsevier; 2020:chap 93.

Radich J. Chronic myeloid leukemia. In: Goldman L, Cooney KA, eds. Goldman-Cecil Medicine. 27th ed. Philadelphia, PA: Elsevier; 2024:chap 170.

Walter RB, Appelbaum FA. The acute leukemias. In: Goldman L, Cooney KA, eds. Goldman-Cecil Medicine. 27th ed. Philadelphia, PA: Elsevier; 2024:chap 168.

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  • Bone marrow aspiration

    Bone marrow aspiration

    illustration

  • Acute lymphocytic leukemia - photomicrograph

    Acute lymphocytic leukemia - photomicrograph

    illustration

  • Auer rods

    Auer rods

    illustration

  • Chronic lymphocytic leukemia - microscopic view

    Chronic lymphocytic leukemia - microscopic view

    illustration

  • Chronic myelocytic leukemia - microscopic view

    Chronic myelocytic leukemia - microscopic view

    illustration

  • Chronic myelocytic leukemia

    Chronic myelocytic leukemia

    illustration

  • Chronic myelocytic leukemia

    Chronic myelocytic leukemia

    illustration

A Closer Look

 

Tests for Leukemia

 
 

Review Date: 3/31/2024

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