PMC4559184_01
High-resolution ultrasonography of neck showing a well-defined oval hypoechoic mass in the region of parathyroid, posterior to the right lobe of thyroid. The lesion measured 19.6 mm (SI) x 12.3 mm (TR) x 8.5 mm (AP), was largely hypoechoic, and showed a small cystic/necrotic change within it.
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The lesion measured 19.6 mm superior inferior (SI) x 12.3 mm transverse (TR) x 8.5 mm anterior posterior (AP), was largely hypoechoic, and showed small cystic/necrotic change within (Fig. 1).
99mTc-MIBI radioisotope dual-phase parathyroid scan. A 30-min image showing an area of increased uptake in the lower pole of the right lobe. Delayed images (1-3 hours) show prolonged tracer retention with minimal washout in the area of increased tracer concentration adjacent to the lower pole of the right lobe.
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The parathyroid 99mTc-sestamibi scintigraphy confirmed the parathyroid lesion (Fig. 2).