Clinical Impact of 68Ga-PSMA PET/CT in a Patient With Biochemical Recurrence of Prostate Cancer

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A 64-year-old man with history of prostate adenocarcinoma underwent radical prostatectomy in 2003. He remained with undetectable prostate-specific antigen (PSA) levels until 2014, when he then presented rising serum PSA levels and performed a 99mTc-MDP bone scan that was negative for metastases. In August 2015, his PSA was 4.89 ng/dL, and restaging images with pelvic MR and 18F-FDG PET/CT were both negative. Therefore, the patient underwent a 68Ga-PSMA PET/CT that showed marked tracer uptake in a single mediastinal lymph node. Histopathology demonstrated metastatic adenocarcinoma secondary to prostate cancer, altering patient management to hormone therapy instead of pelvic radiotherapy.

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