As concerns mBC, Venema et al. [23] correlated [18F]-FES and [18F]-FDHT uptake (i.e., SUVmax) with the expression of ER and AR, respectively, measured in tumor samples: both the aforementioned tracers showed a significant correlation with the histochemical data, although it was greater between [18F]-FES and ER than in the case of [18F]-FDHT and AR (0.78 vs. 0.47). Here, AR is linked to neoplasm.