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Chronic Lymphocytic Leukemia (CLL)

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Leukemia and Related Disorders

Abstract

Chronic lymphocytic leukemia is the most common leukemia affecting adults in Western countries, accounting for about 30% of all leukemias. It is a clonal malignancy of mature CD5+ B-lymphocytes involving the peripheral blood, bone marrow, and lymphoid organs and has a distinct immunophenotype that allows differentiation from other B-cell lymphomas. Most patients with CLL present with a lymphocytosis at diagnosis; however, some patients present with lymphadenopathy alone. CLL is predominantly a disease of the elderly as the median age at diagnosis is 72 years. The clinical course of CLL is quite variable, with survival times from initial diagnosis ranging from 2 to 20 years.

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Correspondence to John M. Pagel M.D., Ph.D. .

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Gutman, J.A., Smith, K.M., Pagel, J.M., Pagel, J.M. (2012). Chronic Lymphocytic Leukemia (CLL). In: Estey, E., Appelbaum, F. (eds) Leukemia and Related Disorders. Contemporary Hematology. Springer, New York, NY. https://doi.org/10.1007/978-1-60761-565-1_3

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