What is the prevalence of hairy cell leukemia (HCL)?

Updated: Sep 16, 2018
  • Author: Emmanuel C Besa, MD; Chief Editor: Koyamangalath Krishnan, MD, FRCP, FACP  more...
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Hairy cell leukemia is relatively uncommon, accounting for 2% of all leukemia cases. An estimated 1100 new cases were diagnosed in the United States in 2016. [8] Hairy cell leukemia is observed more commonly in whites. It has been reported to occur in Ashkenazi Jews, and it is rare in Japan and in those of African descent.

The disease occurs predominantly in middle-aged men, with a median age of 49-51 years. The male-to-female ratio is 4:1 to 5:1. [2, 9]

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