Myeloblasts 20 Percent or More of Bone Marrow Non-Erythroid Cells

**Semantic type:** Laboratory or Test Result

**Definition:** A semi-quantitative microscopic finding indicating that at least 20 percent of the non-erythroid nucleated cells in a bone marrow sample are immature mononuclear cells of myeloid origin.

**Synonyms:** - Myeloblasts 20% or More of Bone Marrow Non-Erythroid Cells