A Rare Presentation of HIV-Negative Plasmablastic Lymphoma: A Diagnostic Dilemma

Figure 1

(a, b) Bone marrow biopsy with extensive infiltration by atypical plasmacytoid cells (original magnifications: ×100; ×400). (c) The cells are positive for CD138 by immunohistochemistry, indicative of plasma cell differentiation (original magnification: ×400). (d) Atypical plasmacytoid cells, including forms with plasmablastic morphology, as visualized on bone marrow aspirate smear (original magnification: ×1000).

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