A case in which a hemodialysis patient was diagnosed with papillary thyroid carcinoma and parathyroid oxyphil cell adenoma during secondary hyperparathyroidism surgery

Abstract

The patient was a 66-year-old male, who had been undergoing hemodialysis for 9 years for chronic renal failure due to diabetic nephropathy. He was diagnosed with hypercalcemia and hyperparathyroidism based on a blood test (Ca: 10.4 mg/dL and intact PTH: 568 pg/mL). Hypoechoic masses (size: 8-14 mm) were found in the right thyroid lobe, the dorsal side of the left thyroid lobe, and the lower pole of the thyroid gland on ultrasonography. MIBI scintigraphy showed no abnormal accumulation by the masses. The patient was diagnosed with secondary hyperparathyroidism (SHPT). Moreover, a nodule with calcification, which had a viable blood supply, was detected in the thyroid gland. It was suspected to be a thyroid malignancy. Total parathyroidectomy was performed in October X. A rapid pathological examination revealed thyroid cancer, and total thyroidectomy was conducted. The subsequent pathological examination revealed parathyroid hyperplasia, and an oxyphil cell adenoma was found in one gland. We report a case of thyroid cancer associated with SHPT that was complicated with oxyphil cell adenoma.