Scan showed normal sized but hypervascular thyroid gland. This is consistent with Grave's disease.
In addition, there is a homogenous isoechoic mass located infero-posterior to right thyroid, measuring 2.03 x 1.17 x 1.24 cm. No vascularity noted in this mass. This mass is suggestive of parathyroid adenoma.
Further investigation required with either MRI or sestamibi scan.