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  • Title: Investigation of the clonality of lymphocytes in Hashimoto's thyroiditis using immunoglobulin and T-cell receptor gene probes.
    Author: Katzin WE, Fishleder AJ, Tubbs RR.
    Journal: Clin Immunol Immunopathol; 1989 May; 51(2):264-74. PubMed ID: 2784756.
    Abstract:
    Southern blotting and DNA hybridization were used for the detection of immunoglobulin and T-cell receptor gene rearrangements in thyroid tissue from six patients with Hashimoto's thyroiditis, three patients with B-cell lymphoma complicating Hashimoto's thyroiditis, and two patients with nonspecific lymphocytic thyroiditis. Immunoglobulin gene rearrangements were detected only in patients with histologic evidence of lymphoma. A single T-cell receptor beta-chain gene rearrangement was detected in one of the patients with uncomplicated Hashimoto's thyroiditis. Based on our knowledge of primary thyroid lymphomas, it is highly unlikely that this case represents an early, histologically occult T-cell lymphoma. The uniform lack of immunoglobulin gene rearrangements in Hashimoto's thyroiditis supports the use of genotypic analysis in differentiating between uncomplicated Hashimoto's thyroiditis and non-Hodgkin's lymphoma. The finding of a T-cell receptor gene rearrangement in a case of Hashimoto's thyroiditis suggests that the immune response in this disease occasionally may be clonally restricted.
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