{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,13]],"date-time":"2026-03-13T15:41:31Z","timestamp":1773416491871,"version":"3.50.1"},"reference-count":23,"publisher":"BMJ","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["BMJ Case Reports"],"abstract":"<jats:p>Primary thyroid gland lymphomas are uncommon tumours that occur in the setting of lymphocytic thyroiditis or Hashimoto\u2019s disease in almost all cases. Rarely these tumours show extensive plasmacytic differentiation. In these conditions, a distinction between an inflammatory thyroid infiltrate and extramedullary plasmacytoma may be extremely difficult and precise criteria and ancillary techniques are necessary for a correct diagnosis. The authors report a case of mucosa associated lymphoid tissue (MALT) lymphoma of the thyroid gland in a 69-year-old Iranian man with Hashimoto\u2019s thyroiditis which was diagnosed by means of immunohistochemical stains. This case demonstrates that histology may not distinguish between extramedullary plasmacytoma and MALT lymphoma of the thyroid gland and the use of immunohistochemical staining stains were essential to prove definite diagnosis.<\/jats:p>","DOI":"10.1136\/bcr.05.2011.4277","type":"journal-article","created":{"date-parts":[[2011,11,2]],"date-time":"2011-11-02T11:58:39Z","timestamp":1320235119000},"page":"bcr0520114277","source":"Crossref","is-referenced-by-count":5,"title":["Extranodal marginal zone B cell lymphoma of MALT type with extensive plasma cell differentiation in a man with Hashimoto\u2019s thyroiditis"],"prefix":"10.1136","volume":"2011","author":[{"given":"Fariba","family":"Binesh","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ali","family":"Akhavan","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hossein","family":"Navabii","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2011,11,2]]},"reference":[{"key":"2025042708144260000_2011.nov01_1.bcr0520114277.1","doi-asserted-by":"crossref","first-page":"1273","DOI":"10.1089\/thy.1999.9.1273","article-title":"Lymphoid lesions of the thyroid: review in light of the revised European-American lymphoma classification and upcoming World Health Organization classification.","volume":"9","author":"Kossev","year":"1999","journal-title":"Thyroid"},{"key":"2025042708144260000_2011.nov01_1.bcr0520114277.2","doi-asserted-by":"publisher","DOI":"10.1007\/s005950300007"},{"key":"2025042708144260000_2011.nov01_1.bcr0520114277.3","doi-asserted-by":"publisher","DOI":"10.1210\/jc.87.1.105"},{"key":"2025042708144260000_2011.nov01_1.bcr0520114277.4","first-page":"338","article-title":"Clinical presentation and treatment of non-Hodgkin\u2019s lymphoma of the thyroid gland.","volume":"8","author":"Wirtzfeld","year":"2001","journal-title":"Ann Surg Oncol"},{"key":"2025042708144260000_2011.nov01_1.bcr0520114277.5","doi-asserted-by":"publisher","DOI":"10.1046\/j.1365-2559.1996.d01-473.x"},{"key":"2025042708144260000_2011.nov01_1.bcr0520114277.6","doi-asserted-by":"crossref","first-page":"641","DOI":"10.1111\/j.1365-2559.1984.tb02377.x","article-title":"Multiple lymphomatous polyposis of the gastrointestinal tract.","volume":"8","author":"Isaacson","year":"1984","journal-title":"Histopathology"},{"key":"2025042708144260000_2011.nov01_1.bcr0520114277.7","first-page":"139","article-title":"Mucosa-associated lymphoid tissue lymphoma.","volume":"36","author":"Isaacson","year":"1999","journal-title":"Semin Hematol"},{"key":"2025042708144260000_2011.nov01_1.bcr0520114277.8","first-page":"151","article-title":"Gastrointestinal lymphomas of T- and B-cell types.","volume":"12","author":"Isaacson","year":"1999","journal-title":"Mod Pathol"},{"key":"2025042708144260000_2011.nov01_1.bcr0520114277.9","doi-asserted-by":"publisher","DOI":"10.1097\/00125480-199407000-00006"},{"key":"2025042708144260000_2011.nov01_1.bcr0520114277.10","doi-asserted-by":"publisher","DOI":"10.1016\/S0046-8177(00)80233-6"},{"key":"2025042708144260000_2011.nov01_1.bcr0520114277.11","first-page":"10","article-title":"[Primary thyroid lymphomas: clinicopathologic study of 30 cases and review of the literature].","volume":"22","author":"Michels","year":"2002","journal-title":"Ann Pathol"},{"key":"2025042708144260000_2011.nov01_1.bcr0520114277.12","doi-asserted-by":"publisher","DOI":"10.1097\/00000478-200005000-00001"},{"key":"2025042708144260000_2011.nov01_1.bcr0520114277.13","doi-asserted-by":"publisher","DOI":"10.1210\/jc.84.4.1206"},{"key":"2025042708144260000_2011.nov01_1.bcr0520114277.14","doi-asserted-by":"crossref","first-page":"1624","DOI":"10.1200\/JCO.1997.15.4.1624","article-title":"Mucosa-associated lymphoid tissue gastrointestinal and nongastrointestinal lymphoma behavior: analysis of 108 patients.","volume":"15","author":"Thieblemont","year":"1997","journal-title":"J Clin Oncol"},{"key":"2025042708144260000_2011.nov01_1.bcr0520114277.15","doi-asserted-by":"publisher","DOI":"10.1046\/j.1365-2559.1996.268311.x"},{"key":"2025042708144260000_2011.nov01_1.bcr0520114277.16","doi-asserted-by":"crossref","first-page":"81","DOI":"10.1111\/j.1365-2559.1985.tb02972.x","article-title":"Primary malignant lymphoma of the thyroid\u2013a tumour of mucosa-associated lymphoid tissue: review of seventy-six cases.","volume":"9","author":"Anscombe","year":"1985","journal-title":"Histopathology"},{"key":"2025042708144260000_2011.nov01_1.bcr0520114277.17","doi-asserted-by":"publisher","DOI":"10.1002\/1097-0142(19860701)58:1<105::AID-CNCR2820580119>3.0.CO;2-K"},{"key":"2025042708144260000_2011.nov01_1.bcr0520114277.18","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1093\/ajcp\/74.1.1","article-title":"Malignant lymphoma and other lymphoproliferative disorders of the thyroid gland. 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