Findings, case of 35 y/o woman with abnormally low serum TSH, high T4 and high T3 levels

Imaging Findings

Images obtained from technetium-99m-pertechnetate (TcO₄) thyroid scintigraphy show abnormally increased homogeneous radiotracer uptake throughout the thyroid, which is normal in size. The intensity of thyroid gland uptake exceeds the uptake in both salivary glands (arrows), background activity is markedly decreased, and the pyramidal lobe is clearly visible. All of these findings indicate a hyperfunctioning gland. There is no focal photopenic or focal hot area to suggest a nodule.

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