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  • Title: Brown tumor of the sternum: a potential source of false-positive Tl-201 and Tc-99m subtraction imaging in the mediastinum.
    Author: Kumar R, Gupta R, Malhotra A.
    Journal: Clin Nucl Med; 2000 Jan; 25(1):44-7. PubMed ID: 10634530.
    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.
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