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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 

Tc-99m pertechnetate scintigraphy before and after potassium perchlorate administration for the diagnosis of retrosternal goiter.

A 52-year-old woman was hospitalized because of dyspnea and dysphagia. Thoracic computed tomography revealed a retrotracheal mass. Tc-99m pertechnetate scintigraphy showed intense accumulation of radioactivity corresponding to the mediastinal mass detected by computed tomography. Repeated Tc-99m pertechnetate scintigraphy performed after oral administration of potassium perchlorate (KCLO4) revealed complete disappearance of the radioactive accumulation in the mediastinum, suggesting that the retrotracheal mass was a retrosternal goiter. Subsequent surgical removal and analysis of the mass showed it was indeed a retrosternal goiter. This case highlights the importance of Tc-99m pertechnetate thyroid scintigraphy with and without KCLO4 administration as a simple, accurate, and cost-effective imaging method to diagnose retrosternal goiter.[1]

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