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March 1987

Ectopic Thyroid Tissue on Thallium/ Technetium Parathyroid Scan

Arch Intern Med. 1987;147(3):595-596. doi:10.1001/archinte.1987.00370030193039

• The thallium 201/technetium 99m pertechnetate radio-nuclide study is becoming widely accepted as a means of localizing abnormal or aberrantly located parathyroid tissue. We describe a case in which ectopic retrosternal thyroid tissue appeared as a parathyroid adenoma on thallium-201/technetium-99m pertechnetate scan. Physicians who use this radio-nuclide study should be aware of the possibility of false-positive images within the mediastinum.

(Arch Intern Med 1987;147:595-596)