Case Report: Sinonasal plasmablastic lymphoma in a human immunodeficiency virus-negative elderly woman diagnosed by immunohistochemistry
Background Plasmablastic lymphoma is a rare, highly aggressive mature B-cell lymphoma with terminal B-cell/plasma-cell differentiation. It usually arises in the oral cavity in patients with human immunodeficiency virus infection or other forms of immunodeficiency, whereas primary sinonasal involvement in an apparently...