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Lymphoid leukemia
	Classification and external resources
ICD-10	C91.
ICD-9	204
MeSH	D007945

Lymphoid leukemia or lymphocytic leukemia is a type of leukemia affecting circulating lymphocyte cells. This is in contrast to lymphoma, which is a solid tumor of the same type of cells.^[1]

Lymphocytes are a subtype of white blood cells. Most lymphoid leukemias involve a particular subtype of lymphocytes, the B cell.

Spain being member of International Cancer Genome Consortium is leading efforts to map lymphoid leukemia's complete genome.

[edit] Classification

Historically, they have been most commonly divided by the stage of maturation at which the clonal (neoplastic) lymphoid population stopped maturing:

However, the influential WHO Classification (published in 2001) emphasized a greater emphasis on cell lineage. To this end, lymphoid leukemias can also be divided by the type of cells affected:

The most common type of lymphoid leukemia is B-cell chronic lymphocytic leukemia.

[edit] References

^ Parham, Peter (2005). The immune system. New York: Garland Science. p. 414. ISBN 0-8153-4093-1.

This article about a neoplasm is a stub. You can help Wikipedia by expanding it.

[isbn0-8153-4093-1-0] Parham, Peter (2005). The immune system. New York: Garland Science. p. 414. ISBN 0-8153-4093-1.

[1]