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  • Title: Follicular lymphoid hyperplasia of the oral cavity representing progressive transformation of germinal center.
    Author: Kojima M, Nakamura S, Iijima M, Yoshizumi T, Sakata N, Masawa N.
    Journal: APMIS; 2005 Mar; 113(3):221-4. PubMed ID: 15799767.
    Abstract:
    Follicular lymphoid hyperplasia (FLH) of the oral cavity is a rare and poorly understood lymphoproliferative disorder. We present a case of FLH of the oral cavity presenting with progressive transformation of germinal center (PTGC). The patient was a 49-year-old Japanese woman presenting with a hard mass in the right cheek. The resected specimen contained numerous lymphoid follicles with active germinal centers and a portion of the lymphoid follicles exhibited PTGC. The PTGCs contained a few large lymphoid cells resembling lymphocytic and histiocytic Reed-Sternberg cells of nodular lymphocyte-predominant Hodgkin lymphoma. The PTGC was surrounded by groups of epithelioid cells. In situ hybridization studies demonstrated strong expression of Epstein-Barr virus (EBV)-encoded small RNA in scattered large lymphoid cells in the PTGC. Although the etiology of FLH of the oral cavity remains unclear, the present case suggests that a subset of FLH of the oral cavity appears to be an EBV-associated lymphoproliferative disorder.
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