title: [Follicular dendritic cells in extranodal non-Hodgkin's lymphomas].
abstract: Extranodal lymphomas of the thyroid (n = 19), kidney (n = 15) and testis (n = 30) were investigated histologically and immunohistochemically using the monoclonal antibody Ki-FDC1P, which recognizes follicular dendritic cells on paraffin sections. Only lymphomas of the thyroid were of MALT-lymphoma type and contained tumor associated abortive follicles of follicular dendritic cells. In kidney and testis, no MALT-Lymphomas were found. Lymphoepithelial lesions, a hallmark of MALT-Lymphomas, occurred not only in thyroid MALT-lymphomas, but also in testicular centroblastic lymphomas (lacking other features of MALT-lymphomas). Therefore, lymphoepithelial lesions are not specific for MALT-lymphomas.
mesh_terms: D000911:Antibodies, Monoclonal; D003713:Dendritic Cells / Q000473:pathology*; D006801:Humans; D007668:Kidney / Q000473:pathology; D008228:Lymphoma, Non-Hodgkin / Q000276:immunology / Q000473:pathology*; D008297:Male; D013736:Testicular Neoplasms / Q000276:immunology / Q000473:pathology*; D013737:Testis / Q000473:pathology; D013964:Thyroid Neoplasms / Q000276:immunology / Q000473:pathology*
chemical_list: D000911:Antibodies, Monoclonal
vernacular_title: Follikuläre dendritische Zellen in extranodalen Non-Hodgkin-Lymphomen.