Introduction: Hobnail papillary thyroid carcinoma is a rare, recently described papillary thyroid carcinoma variant, with potential for a more aggressive clinical course of disease and poorer prognosis.
Case Report: A 53-year-old man presented with a left thyroid mass. The ultrasound features of this mass included a predominantly cystic appearance with mobile internal echoes, vascularised internal septations, and murally based solid material.
A 45-year-old man presenting with abdominal pain was found to have severe hypercalcaemia with elevated parathyroid hormone. Investigations revealed a parathyroid mass and bone metastases consistent with metastatic parathyroid carcinoma. The patient underwent parathyroidectomy, with histology confirming a right inferior parathyroid carcinoma.
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