[&lt;sup&gt;68&lt;/sup&gt;Ga]Ga-PSMA-11 PET/CT in medullary thyroid carcinoma: comparison with [&lt;sup&gt;18&lt;/sup&gt;F]FDG PET/CT and immunohistochemical analysis. The gene discussed is FOLH1; the disease is medullary thyroid gland carcinoma.