A 72-year-old man is referred for hematology evaluation because of a lymphocyte count of 3.2 × 10^9/L. Flow cytometry shows a population of lymphocytes that are kappa light-chain restricted and express CD5. Hemoglobin and platelet count are normal. There is no peripheral adenopathy or hepatosplenomegaly. Which ONE of the following is the most likely diagnosis? Select one: A. Monoclonal B-cell lymphocytosis B. Reactive lymphocytosis C. B cell chronic lymphocytic leukemia (B-CLL) D. Follicular non-Hodgkin lymphoma
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2 × 10^9/L. Flow cytometry shows kappa light-chain restricted lymphocytes that express CD5. Show more…
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