Fig. 1

Axial CT scan (A-B) revealing four nodules (arrows) located posterior and inferior to the thyroid gland. Ultrasonography (C) revealing a small nodule located in the right lobe of the thyroid gland. Histopathology (haematoxylin-eosin (HE) staining, magnification Ă—40; D, left superior parathyroid nodule; E, right superior parathyroid nodule; F, left inferior parathyroid nodule; G, right inferior parathyroid nodule) showing nodular hyperplasia composed mainly of chief cells