Abstract
Tl-201 and Tc-99m subtraction imaging is a well-established technique for detecting parathyroid adenomas. We report a case of a brown tumor of the upper sternum mimicking an ectopic mediastinal parathyroid adenoma on Tl-201 and Tc-99m subtraction imaging in a patient with hyperparathyroidism. This brown tumor showed Tl-201 uptake but not Tc-99m uptake and thus did not subtract out in this scan.
MeSH terms
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Adenoma / diagnostic imaging*
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Adult
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Female
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Fibrous Dysplasia of Bone / diagnostic imaging*
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Fibrous Dysplasia of Bone / pathology
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Humans
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Hyperparathyroidism / complications
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Mediastinum / diagnostic imaging*
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Parathyroid Neoplasms / diagnostic imaging*
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Radionuclide Imaging
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Radiopharmaceuticals*
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Sodium Pertechnetate Tc 99m*
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Sternum / diagnostic imaging*
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Sternum / pathology
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Subtraction Technique
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Thallium Radioisotopes*
Substances
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Radiopharmaceuticals
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Thallium Radioisotopes
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Sodium Pertechnetate Tc 99m