Parathyroid Carcinoma With Marked Uptake of 99mTcO4.

Elahe Pirayesh, Mehrdad Tavakoli

Clinical nuclear medicine 2021 Feb 01

filter terms:

A 51-year-old man with a palpable neck mass and elevated parathyroid hormone was referred to our department for parathyroid scintigraphy. After injection of 740 MBq 99mTc-MIBI, a dual-phase scan was obtained, which revealed a persistent and intense focal hyperactivity in the left side of the neck (compatible with the neck mass). Thyroid scan with 99mTcO4- also showed increased uptake of the mass, similar to a hot thyroid nodule. After surgery, parathyroid carcinoma was confirmed pathologically. This case demonstrates a rare presentation of parathyroid carcinoma as a hot nodule in thyroid scan, which has been attributed to hypervascularity of the lesion. Copyright © 2020 Wolters Kluwer Health, Inc. All rights reserved.