PMC5635244_01
a. 99mTc-MIBI scintigraphy scan demonstrating PTH adenomas. b. 99mTc-MIBI scintigraphy scan deomonstrating ectopic PTH adenomas in anterior mediastinum.
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In order, to rule out the possibility of parathyroid adenoma, a high resolution CT scan of chest and neck where carried out, but, there was no abnormal enlargement of the parathyroid gland present, however, 99mTc-MIBI scintigraphy scan was done that showed a well defined area of abnormal tracer deposition in anterior mediastinum just below the manubriosternal junction confirming the diagnosis of mediastinal ectopic PA, furthermore, parathyroid adenomas were outlined over lower pole of right thyroid in anterior mediastinum as well. (Fig. 1a and b).