PMC3295540_01
(a, b, c) Thyroid ultrasound showing large complex cystic mass within or adjacent to the right lobe of the thyroid gland measuring up to 4.5 cm representing thyroid versus parathyroid lesion. (d) Parathyroid scan shows increased uptake in the lobes of thyroid gland. "MIBI avid lesion with retained activity in the periphery."
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fig1
A parathyroid scan with Technitium-99-sestamibi scintigraphy revealed an "avid lesion with retained activity in the periphery" (Figure 1).
(a, b)  Histopathological examination of the cyst revealed a cyst wall composed of fibroadipose tissue containing islands of parathyroid tissue ((a) HE stain 100x, (b) HE stain 400x).
CRIM2012-851941.002.jpg
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fig2
Within the fibrous tissue there was hemorrhage and residual hypercellular parathyroid tissue with osteoid focus (Figure 2).