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A 60-y-old man with T2bN0, Gleason 4 + 3 prostate cancer, after prostatectomy. Time from treatment is 4 y, prescan PSA level is 0.24 ng/mL, and PSAdt is 16 mo. 18F-DCFPyL PET/CT demonstrates focal uptake (arrows) at right seminal vesicle resection site. Patient refused biopsy and proceeded with RT.
