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18F-FCH PET/CT staging in a 67-year-old prostate cancer patient, Gleason score 7, PSA 21.1 ng/mL. left: transaxial CT, middle: transaxial PET image, right: transaxial PET/CT fusion image. 18F-FCH PET/CT shows markedly increased tracer uptake (SUVmax: 5.3) in a small lymph node in the left internal iliac chain (arrows), verified as lymph node metastasis by histopathology [15].
