Discordant lesions in PDTC with explicit increased FDG uptake and no clear PSMA expression were seen in bone metastases (5/10), cervical lymph node metastases (1/2), mediastinal lymph node metastases (2/4), pulmonary metastases (15/15), local tumor recurrence/thyroid bed lesions (2/2) and soft tissue metastases (1/2); discordant lesions with explicit PSMA expression and no FDG uptake were seen in bone metastases (2/10) and concordant lesions with increased FDG uptake and increased PSMA expression were seen in a brain metastases (1/1) and a mediastinal lymph node metastasis (1/4). This evidence concerns the gene FOLH1 and neoplasm.