title: [Intensification of sensitivity of monoclonality determination of B-cells in autoimmune thyroiditis and low malignancy B-NHL of the MALT type using temperature gradient gel electrophoresis (TGGE)].
abstract: Malignant non-Hodgkins lymphoma with primary involvement of the thyroid is a rare disease. Nearly all these lymphomas are of B-cell phenotype, and they represent a broad morphological spectrum of high and low grade entities. We investigated 18 cases of Hashimotos disease and 95 cases of thyroid non-Hodgkins lymphoma including 16 cases of MALT-lymphoma. This type of lymphoma is often hardly distinguishable from reactive lesions, even by immunohistochemistry. Therefore, we introduced a new molecular genetic technique based on the polymerase chain reaction (PCR) combined with temperature-gradient gel electrophoresis to demonstrate monoclonal populations of B cells in a polyclonal background of reactive B lymphocytes. With this approach we found monoclonality in 4 of 18 cases of Hashimotos disease. In our opinion, these 4 cases demonstrate clearly the transition from autoimmune disease into non-Hodgkins lymphoma.
authors.affiliation: Institut für Hämatopathologie, Universität Kiel.
authors.forename: H H
authors.initials: HH
authors.lastname: Wacker
authors.forename: M
authors.initials: M
authors.lastname: Tiemann
authors.forename: M A
authors.initials: MA
authors.lastname: Menke
authors.forename: A
authors.initials: A
authors.lastname: Back
authors.forename: R M
authors.initials: RM
authors.lastname: Parwaresch
mesh_terms: D001402:B-Lymphocytes / Q000276:immunology*; D017635:Clonal Anergy; D004247:DNA / Q000032:analysis; D004586:Electrophoresis / Q000379:methods; D015321:Gene Rearrangement; D005803:Genes, Immunoglobulin; D006801:Humans; D018442:Lymphoma, B-Cell, Marginal Zone / Q000235:genetics / Q000276:immunology* / Q000473:pathology; D016133:Polymerase Chain Reaction / Q000379:methods; D011948:Receptors, Antigen, T-Cell / Q000235:genetics; D012680:Sensitivity and Specificity; D013696:Temperature; D013967:Thyroiditis, Autoimmune / Q000235:genetics / Q000276:immunology* / Q000473:pathology
chemical_list: D011948:Receptors, Antigen, T-Cell; D004247:DNA