Leukemia
Leukemia (American English) or leukaemia (British English) (from the Greek leukos λεÏκος - white, and haima αίμα - blood) is a type of cancer of the blood or bone marrow characterized by an abnormal increase of immature white blood cells called "blasts". Leukemia is a broad term covering a spectrum of diseases. In turn, it is part of the even broader group of diseases affecting the blood, bone marrow and lymphoid system, which are all known as hematological neoplasms.
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