Fig. 1From: Mediastinal parathyroid carcinoma: a case report and review of the literature CT imaging and scintigraphic analysis using technetium-99 m. a A mass is found in the mediastinum on CT imaging. b, c Parathyroid scintigraphy shows high focal radiotracer uptake at 15 and 90 min  after injection of 99mTc-sestamibiBack to article page