FOLH1 and posterior cortical atrophy: PSMA-RADS-3B lesions include equivocal uptake in bone lesions not specifically atypical for PCa on anatomic imaging (for example, an osteophyte would be atypical for PCa and any uptake in such a structure should be categorized as PSMA-RADS-2, whereas a bone lesion without anatomic correlate would not be atypical for PCa and might be categorized as PSMA-RADS-3B).