Abrupt Development of Plasma Cell Leukemia in a Patient with Chronic Anemia under Follow-up.

Plasma cell leukemia (PCL) is a very rare and progressive hematologic malignancy with unpleasant prognosis, which present with monoclonal proliferation of plasma cells in peripheral blood. Here we report a 52-year-old female case of PCL which diagnosed by morphology and immunohistochemistery (IHC) study. IHC revealed CD20+/CD38+/CD138+/CD56-/kappa-/lambda+.