Art and Science of Laboratory Medicine

Art and Science of Laboratory Medicine

Friday, August 28, 2015

Circulating reactive plasma cells

A 57-year-old man presented with a history of peripheral T-cell lymphoma that was diagnosed 2 years previously and that recurred 1 year later after 6 cycles of combination therapy with cyclophosphamide, daunorubicin, vincristine, and prednisone. A complete blood count showed an elevated white blood cell count (1.53 × 103/μL), normocytic anemia, and thrombocytopenia. A comprehensive metabolic panel showed an increase in total protein (9.7 g/dL) and decreased albumin level (3.3 g/dL). Serum immunoglobulin G level was elevated as well (5310 mg/dL). A peripheral blood smear was reviewed, which showed prominent rouleau formation with circulating plasma cells and plasmacytoid lymphocytes (>20% of the white blood cells). These findings were indicative of a plasma cell leukemia.

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Circulating reactive plasma cells in the setting of peripheral T-cell lymphoma mimicking plasma cell leukemia

Source: Blood Journal

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