[Thyroid lymphoma: a not so unusual disease]

A review was made of the six cases of primary thyroid lymphoma diagnosed at our institution. An increase in the incidence was observed of this disease in the last two years, with no evidence of lower diagnosis of anaplastic thyroid carcinoma. The presenting symptom was compression in all cases. The interval time from symptoms to diagnosis ranged from 5 to 150 days. The centroblastic pattern was the most common histologic type, with a relevant role of MALT lymphoma in the last few years. Therapy included surgical exeresis in two cases on account of compressive symptoms and radiotherapy and/or chemotherapy was always preferred on account of the stage.