In nodal surgery, the accuracy of identifying tumor-containing lymph nodes was reported in 11 studies (38%): salvage LND in seven and primary LND in four (tracers used in vivo and ex vivo: 111In-PSMA-617, 111In-PSMA-I&T, 99mTc-PSMA-I&S, and 99mTc-MIP-1404; tracers used only ex vivo: 68Ga-PSMA-11). This evidence concerns the gene FOLH1 and neoplasm.