FOLH1 and posterior cortical atrophy: As normal lymphatic or retroperitoneal fatty tissue does not exhibit PSMA expression, a metastatic LN can be detected with a favorable lesion-to-background ratio.31Initial studies in recurrent PCa scenarios with68Ga-PSMA described the first promising results.34At initial staging, some authors achieved a sensitivity of 88.1% for LN detection with68Ga-PSMA-PET/CT.12