Figure 6: A 50-year-old female presented with renal stone disease with hypercalcemia. Dual-phase Tc99m sestamibi scan (a) early images show focal area of tracer concentration below left lobe of the thyroid; (b) delayed images show retention of tracer uptake in the anterior neck left of the midline. (c) SPECT/CT localizes increased tracer uptake to the left paratracheal region