Figure 2From: Substernal oxyphil parathyroid adenoma producing PTHrP with hypercalcemia and normal PTH level Tc-99m-sestamibi Tc-99m sodium pertechnetate substraction image showed an area of intense uptake below the inferior pole of the left thyroid lobe, in the upper mediastinum, in the left median position and normal thyroid with homogenous radiopharmaceutical uptake (arrow). Back to article page