Hurthle Cell Thyroid Adenoma Showing Avid Uptake on F-18-PSMA-1007 PET/CT

We report the case of a 74-year-old man with suspected recurrent prostate carcinoma who underwent F-18-PSMA-1007 PET/CT for restaging the disease. PET/CT imaging presented an incidentaloma with intense F-18-PSMA-1007 uptake in the right thyroid lobe. Biopsy and genomic sequencing test confirmed the diagnosis of Hurthle cell thyroid adenoma. Therefore, it is important to raise awareness of this benign lesion in the differential diagnosis of incidental thyroid nodules with high F-18-PSMA-1007 activity.