Chronic Myelomonocytic Leukemia

**Semantic type:** Neoplastic Process

**Definition:** A myelodysplastic/myeloproliferative neoplasm which is characterized by persistent monocytosis, absence of a Philadelphia chromosome and BCR/ABL fusion gene, fewer than 20 percent blasts in the bone marrow and blood, myelodysplasia, and absence of PDGFRA or PDGFRB rearrangement.

**Synonyms:** - CMML - CMML - Chronic Myelomonocytic Leukemia (CMML) - Chronic Myelomonocytic Leukemia (CMML) - Chronic monocytic leukemia - Chronic myelomonocytic leukemia - chronic myelomonocytic leukemia