Synchronous Metastatic Breast Carcinoma and Parathyroid Adenoma on 18F-FDG PET/CT and 99mTc-Sestamibi Imaging

摘要

In addition to nuclear cardiac and breast imaging, Tc-99m-sestamibi scintigraphy is often used to localize parathyroid adenomas. F-18- fluorodeoxyglucose (FDG) PET is heavily utilized in oncology, although its use in identifying parathyroid adenomas is limited. We describe a case of a 57-year-old woman who underwent parathyroid scintigraphy and F-18-FDG PET/CT in the same week due to hyperparathyroidism and an enlarging breast mass, respectively. A right paratracheal mediastinal mass that otherwise would be suspicious for nodal metastases by CT alone was correctly identified to be an ectopic parathyroid adenoma using a combination of the nuclear medicine studies performed.