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Washington University Experience | NEOPLASMS (HEMATOLYMPHOID) | Plasmacytoma | 10C Plasma Cell Dyscrasia (Case 10) Kappa ISH
10C,D In situ hybridization studies show a monoclonal population of plasma cells reactive for kappa (10C) and negative for lambda (10D). The morphologic features and staining profile are consistent with a plasma cell dyscrasia.