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Staging Chronic Myelomonocytic Leukemia (CMML)

Chronic myelomonocytic leukemia (CMML) is grouped into two categories after diagnostic testing:

CMML 1: Immature blood cells make up less than 5 percent of white blood cells in the blood and less than 10 percent in the bone marrow.

CMML 2: Immature blood cells make up 5 to 19 percent of white blood cells in the blood and 10 to 19 percent in the bone marrow.