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Ultrasonographic findings of a parathyroid adenoma at a local hospital before radiofrequency ablation. (A) Ultrasonographic image of the parathyroid mass before radiofrequency ablation. An isoechoic ovoid mass with a peripheral hypoechoic area in the lower portion of the left and infrathyroid area. (B) Ultrasonographic image on the sixth day after radiofrequency ablation of the parathyroid adenoma.
