Megakaryoblasts 50 Percent or More of Bone Marrow Nucleated Cells

**Semantic type:** Laboratory or Test Result

**Definition:** A semi-quantitative microscopic finding indicating that at least 50 percent of the nucleated cells in a bone marrow sample are immature megakaryocytes.

**Synonyms:** - Megakaryoblasts 50% or More of Bone Marrow Nucleated Cells