Plasmablastic lymphoma (PBL) is an aggressive lymphoma classified by the World Health Organization as a subtype of diffuse large B-cell lymphoma that shares many morphologic and immunophenotypic features with multiple myeloma. It is extremely rare in immunocompetent patients. Because of the small number of patients reported, this rare lymphoma remains a poorly characterized and understood entity with presently no standard recommendations regarding the optimal treatment. Herein, we report a dramatic clinical response coupled with tumor lysis syndrome to a bortezomib-based treatment in an HIV-negative patient with refractory plasmablastic lymphoma.
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