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  • Title: Prognostic value of PERCIST and PET/CT metabolic parameters after neoadjuvant treatment in patients with esophageal cancer.
    Author: Martínez A, Infante JR, Quirós J, Rayo JI, Serrano J, Jiménez P, Lavado MC, Baena Á.
    Journal: Rev Esp Med Nucl Imagen Mol (Engl Ed); 2022; 41(6):360-367. PubMed ID: 36243656.
    Abstract:
    AIM: To assess the clinical utility of PERCIST criteria and changes in [18F]FDG PET/CT quantitative parameters as prognostic factors for progression-free survival and cancer-specific survival (CSS) in patients with esophageal cancer treated by chemoradiotherapy. MATERIAL AND METHODS: Fifty patients (48 men) diagnosed with esophageal cancer were retrospectively evaluated over a 7.5-year interval. PERCIST criteria were used to assess response to neoadjuvant therapy. Variations in the metabolic parameters maximum SUV (SUVmax), metabolic tumor volume (MTV) and total lesion glycolysis (TLG) between pre- and post-treatment PET/CT studies were also determined. ROC curves, Kaplan-Meier method and Cox regression model were used for the analysis of prognostic factors and survival curves. RESULTS: The average follow-up was 26.8 months, with 40 recurrences-progressions and 41 deaths. Survival analysis showed statistically significant differences in CSS curves for PERCIST criteria and variation of MTV and TLG. PERCIST criteria were the only independent predictor in the multivariate analysis. Neither SUVmax nor tumor size were predictors for any of the assessment criteria. CONCLUSION: Application of PERCIST criteria as well as change in MTV and TLG from PET/CT studies proved to be prognostic factors for CSS in patients in our setting treated for esophageal cancer. The results could help to personalize treatment.
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