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  • Title: Salvage Therapies After 18F-Fluciclovine Detected Prostate Cancer Recurrences.
    Author: Hwang L, Paluch J, Jadvar H, England JR, Desai B, Ballas LK.
    Journal: Clin Nucl Med; 2020 Sep; 45(9):668-671. PubMed ID: 32520496.
    Abstract:
    BACKGROUND: F-Fluciclovine is the most recent prostate cancer (PCa)-directed PET radiotracer approved by the US Food and Drug Administration for detection of recurrent PCa. We report the treatments and outcomes of patients at our institution with PCa recurrences detected on F-fluciclovine PET/CT. METHODS: We identified men with recurrent PCa detected on F-fluciclovine PET/CT performed between 2017 and 2018 who were previously treated definitively and analyzed their patterns of care and cancer-specific outcomes. RESULTS: We identified 28 men with recurrent PCa detected on F-fluciclovine PET/CT. Twenty-three were initially treated with surgery and 13 also received postoperative radiation therapy (RT). Five patients were initially treated with definitive radiation. After surgery, the median time to F-fluciclovine PET/CT was 67 months (median prostate-specific antigen [PSA] of 1.63 ng/mL). After RT, the median time to F-fluciclovine PET/CT was 95 months with median PSA of 13.31 ng/mL. Six men recurred locally, 9 recurred in the pelvic nodes, 9 had distant nodal recurrences, and 4 had osseous metastases. Of the patients initially treated with surgery, 4 received salvage radiation and 3 received androgen deprivation therapy (ADT). Of the patients initially treated with surgery and postoperative RT, 3 received salvage pelvic nodal dissection, 4 received salvage radiation, and 2 received ADT. Of the patients initially treated with radiation, 4 received salvage ADT. All had PSA decline after salvage therapy. CONCLUSIONS: F-fluciclovine PET/CT can localize PCa recurrences, and subsequent salvage therapies appear effective with decreasing PSA. Longer follow-up will reveal if these diagnostic tests and subsequent therapies will improve PCa survival.
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