 To investigate the expression of API2-MALT1 fusion gene mRNA in Hashimoto's thyroiditis, thyroid MALT lymphoma and DLBCL, as well as the correlation between the expression and the pathogenesis and prognosis of two types of thyroid lymphoma.     ///    [Detecting the API2-MALT1 fusion gene and its significance in Hashimoto's thyroiditis and thyroid lymphomas]..     ///    "however, the correlation between API2-MALT1 fusion gene and the progression from Hashimoto's thyroiditis to lymphoma could not be excluded. "    ///    The effect of API2-MALT1 fusion gene on the prognosis of thyroid lymphomas was assessed by analyzing the clinicopathological features and the follow-up findings.     ///    The incidence of API2-MALT1 transcript in thyroid lymphomas was low.     ///    the thyroid lymphoma with API2-MALT1 transcript seemed to develop on a more indolent clinical course..     ///    API2-MALT1 transcripts were investigated in all cases by reverse transcript touchdown-PCR and nested PCR. 