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99mTc-MIBI Uptake in a Benign Thymic Cyst

Lee, Hwan, MD*; Gault, Christopher R., MD, PhD; Cheng, Gang, MD, PhD*; Shah, Jagruti C., MD*; Pantel, Austin R., MD*

doi: 10.1097/RLU.0000000000002382
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A 34-year-old man with end-stage renal failure status post rejection of a deceased donor kidney transplant presented with bone pain in the setting of elevated serum parathyroid hormone and calcium levels. A 99mTc-MIBI SPECT/CT was performed before planned subtotal parathyroidectomy. SPECT/CT imaging revealed a 1.9-cm anterior mediastinal lesion with radiotracer uptake on both the immediate and delayed images. Surgical pathology of the lesion showed a benign thymic cyst with no parathyroid component.

From the *Division of Nuclear Medicine and Clinical Molecular Imaging, Department of Radiology, University of Pennsylvania, Philadelphia, PA; and

Department of Pathology, Westchester Medical Center, Valhalla, NY.

Received for publication August 27, 2018; revision accepted October 7, 2018.

Conflicts of interest and sources of funding: none declared.

Correspondence to: Austin Pantel, MD, Department of Radiology, Hospital of the University of Pennsylvania, 3400 Civic Center Blvd, Philadelphia, PA 19104. E-mail:

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