FOLH1 and renal pelvis/ureter urothelial carcinoma: On the contrary, in a pilot study evaluating urothelial carcinoma of the upper tract (UTUC, a relatively rare form of urothelial carcinoma), [18F]FDG PET/CT demonstrated a more effective detection of UTUC foci compared to [68Ga]Ga-PSMA-11 PET/CT, with a higher SUVmax (respectively, SUVmax of 18.5 ± 6.7 vs. 4.4 ± 1.45, p < 0.01).