FOLH1 and pachyonychia congenita: 18F-PSMA revealed 25% (13/52) of PC prostatic lesions with histopathology of low- and intermediate-favorable risk PC (GS ≤ 7a) vs. 75% (39/52) with histopathology of intermediate-unfavorable and high-risk PC (GS ≥ 7b) with a sensitivity of 100%, a PPV of 76%, and an accuracy of 76% considering a SUVmax of 2.5.