Plasma Cell Leukemia

**Semantic type:** Neoplastic Process

**Definition:** An aggressive plasma cell neoplasm characterized by the presence of neoplastic plasma cells in the peripheral blood. It is characterized by the presence of a circulating clonal plasma cell count that exceeds 2x10^9/L or is 20% of the leukocyte differential count.

**Synonyms:** - Leukemia Plasmacytic - PCL - Plasma cell leukemia - Plasmacytic Leukemia - Plasmacytic leukemia