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Clin Nucl Med. 2005 Sep;30(9):630.

Ectopic functioning thyroid tissue in the thyroglossal duct detected by radionuclide imaging.

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Department of Nuclear Medicine, Kasturba Medical College & Hospital, Manipal, India.


A 49-year-old man with a clinical diagnosis of Graves' disease was referred for a thyroid scan and radioactive ablation of the gland. Tc-99m pertechnetate scan revealed a diffuse toxic goiter and radiotracer concentration in the thyroglossal duct. He was given 10 mCi of I-131 orally as treatment of thyrotoxicosis. Repeat scanning of the anterior neck 2 days later revealed concentration of radioiodine in the diffusely enlarged gland and the thyroglossal duct as found on the Tc-99m pertechnetate scan, thus confirming the presence of functioning thyroid tissue in the thyroglossal duct.

[Indexed for MEDLINE]

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