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Encapsulated Insular Carcinoma of the Thyroid Arising in Graves’ Disease

Insular carcinoma represents a rather rare form of thyroid cancer. Total encapsulation and history of hyperthyroidism are even extremely rarer events with only a few cases reported in the literature. This article reports an insular carcinoma of the thyroid in a 51-year-old woman, displaying these features and pulmonary metastasis with no cervical lymph node involvement.