Walker, R C Radiological case of the month. Ectopic parathyroid adenoma of the upper mediastinum. [electronic resource] - The Journal of the Arkansas Medical Society Apr 1997 - 565-6 p. digital Publication Type: Case Reports; Journal Article ISSN: 0004-1858 Subjects--Topical Terms: Adenoma--diagnostic imagingChoristoma--diagnostic imagingFemaleHumansMediastinal Diseases--diagnostic imagingMiddle AgedParathyroid Glands--diagnostic imagingParathyroid Neoplasms--diagnostic imagingRadiographyRadionuclide ImagingTechnetium Tc 99m Sestamibi