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68Ga-prostate-specific membrane antigen (PSMA) PET/CT imaging is a relatively new imaging technique used to evaluate the extent of disease in prostate carcinoma. Various other neoplasms may also express PSMA and show uptake on PSMA PET/CT scan. We report a case of a 62-year-old man who had a PSMA PET/CT scan for restaging of prostate carcinoma. A PSMA-avid thyroid lesion was identified, and subsequent tissue sampling confirmed the diagnosis of follicular thyroid adenoma. It is important to be aware of this possibility to avoid scan misinterpretation. Tissue biopsy of PSMA-avid thyroid lesions should be considered to exclude a primary thyroid neoplasm.
Kanthan et al. (Sat,) studied this question.