Serum protein electrophoresis on an elderly patient reveals a monoclonal protein spike. Increased plasma cells are present in the bone marrow. They are CD19 and CD20 negative but demonstrate high-density CD38 and monoclonal cytoplasmic immunoglobulin. Wha

They are CD19 and CD20 negative but demonstrate high-density CD38 and monoclonal cytoplasmic immunoglobulin. What is the most likely diagnosis?


Serum protein electrophoresis on an elderly patient reveals a monoclonal protein spike. Increased plasma cells are present in the bone marrow.

Health Professions

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