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Washington University Experience | NEOPLASMS (HEMATOLYMPHOID) | Plasmacytoma | 15C1 Myeloid sarcoma (looks like plasmacytoma) (Case 15) CD4 2
15C1-3 Tumor cells show co-expression of CD4 immunoreactivity (15C1) but lack evidence for involvement of B cell markers CD20 (15C2) and CD79a (15C3).