Hyperfunctioning Papillary Microcarcinoma Diagnosed by 124I PET/Ultrasound Fusion Imaging

A 49-year-old woman presented with a multinodular goiter, causing local symptoms and hyperthyroisdism. Besides a hypofunctioning benign nodule (TIRADS 3, benign in FNAC), the conventional diagnostic revealed another small hyperfunctioning nodule with suspicious ultrasound features (TIRADS 4C). To rule out a trapping-only nodule and topographical misalignments, a 124 I PET/ultrasound fusion was performed and confirmed elevated iodine uptake...