Figure 9: A 53-year-old female presented with raised serum parathormone; however, serum calcium and phosphorus were within normal limits. Ultrasonography neck showed features suggestive of enlarged right lobe of thyroid with three nodules with calcific foci within it. Tc99m sestamibi scan (a) early images show homogenous tracer uptake in both lobes of the thyroid (Righ > Left) along with small focus of tracer uptake below the thyroid; (b) delayed images show uniform washout of the tracer from both lobes with retention of tracer in the small focus below the thyroid. (c) SPECT/CT of neck and mediastinum localizes the increased tracer uptake in the pretracheal region