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March 1987

Ectopic Thyroid Tissue on Thallium/ Technetium Parathyroid Scan

Author Affiliations

From the Endocrine Service (Drs Asp and Kidd) and Nephrology Service (Dr Hasbargen), Department of Medicine, and the Nuclear Medicine Service, Department of Radiology (Dr Blue), Fitzsimons Army Medical Center, Aurora, Colo.

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)