Endocrinol Metab > Volume 20(3); 2005 > Article
Journal of Korean Endocrine Society 2005;20(3):268-272.
DOI: https://doi.org/10.3803/jkes.2005.20.3.268    Published online June 1, 2005.
A Case of Thyroid MALT Lymphoma without Autoimmune Thyroiditis.
Ok Nyu Kong, Sang Hyen Joo, Sun Hye Shin, Min Ah Na, Jun Hyeop An, Yang Ho Kang, Do Youn Park, Seok Man Son, In Ju Kim, Yong Ki Kim
1Department of Internal Medicine, College of Medicine, Pusan National University, Busan, Korea.
2Department of Pathology, College of Medicine, Pusan National University, Busan, Korea.
A primary thyroid lymphoma is rare among all types of thyroid malignancy. Usually, a thyroid lymphoma is associated with underlying chronic autoimmune thyroiditis. Recently, we experienced a primary thyroid mucosa-associated lymphoid tissue(MALT) lymphoma, with an incidental micropapillary thyroid carcinoma, but lacking evidence of autoimmune thyroiditis. A female patient visited our hospital for further evaluation of a rapidly enlarging, painless thyroid mass which had been stable for 8 years. Lymphocytic thyroiditis or a lymphoma was suspected from fine needle aspiration performed at another hospital. The thyroid function test and other routine laboratory tests were normal. The histopathological findings after a total thyroidectomy revealed a MALT lymphoma with a micropapillary thyroid carcinoma. There was no evidence of chronic autoimmune thyroiditis. This is, to the best of our knowledge, the first case report of a MALT lymphoma arising from the thyroid gland without evidence of chronic autoimmune thyroiditis in Korea
Key Words: MALT lymphoma, Chronic autoimmune thyroiditis

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