Abstract
We report a case of a 47-year-old female known with metastatic papillary thyroid cancer. Her treatment history included total thyroidectomy and 3 previous radio ablations with a cumulative dose of 950 mCi of (131)I. On follow-up, her thyroglobulin levels had demonstrated a rising trend (from 3789.0 to 4240.0 ug/L) despite a (123)I whole-body scan demonstrating a reduction in tracer avid lesions. She was suspected of having radio-resistant disease. The patient underwent both (18)F-FDG and (68)Ga-PSMA PET/CT imaging with both scans demonstrating congruent lesions however with far greater intensity on the (68)Ga-PSMA study.