Fig. 1From: Atypical ultrasound features of parathyroid tumours may bear a relationship to their clinical and biochemical presentationa Neck ultrasonography of 48-year-old male patient with primary hyperthyroidism showed a predominantly cystic right inferior parathyroid lesion with internal septations. b, c Low-power (×50, H&E stain) and high-power (×400, H&E stain) photomicrographs of the excised parathyroid lesion show a cystic tumour (*) with cells arranged in nests and an acinar pattern along the wall (arrow) with delicate fibrovascular septa lined by polygonal cells in keeping with cystic parathyroid adenomaBack to article page