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  • Title: Predictive value of nodal maximum standardized uptake value of pretreatment [18F]fluorodeoxyglucose positron emission tomography imaging in patients with esophageal cancer.
    Author: Yap WK, Chang YC, Tseng CK, Hsieh CH, Chao YK, Su PJ, Hou MM, Yang CK, Pai PC, Lin CR, Hsieh CE, Wu YY, Hung TM.
    Journal: Dis Esophagus; 2017 Aug 01; 30(8):1-10. PubMed ID: 28575243.
    Abstract:
    We retrospectively reviewed 102 patients with esophageal cancer (97.1% squamous cell carcinoma, 96.1% stage III) received FDG-PET staging and were treated by chemoradiotherapy with or without resection to assess whether the pretreatment [18F]fluorodeoxyglucose positron emission tomography (FDG-PET) maximum standardized uptake value (SUVmax) of the primary tumor and metastatic lymph nodes can predict the prognosis of patients with esophageal cancer. Receiver operating characteristic analysis was performed to find the cutoff values for primary tumor SUVmax and nodal SUVmax. The influence of clinical factors including primary tumor SUVmax and nodal SUVmax on local progression-free survival, nodal progression-free survival (NPFS), distant metastases-free survival (DMFS), and overall survival (OS) were evaluated using univariate and multivariate analyses. A total of 40 patients received esophagectomy after neoadjuvant chemoradiotherapy (trimodality), while 62 patients received definitive chemoradiotherapy (dCRT). The median follow-up was 26.4 months. The SUVmax of primary tumor had no significant predictive value on all outcomes, while the SUVmax of metastatic lymph nodes had predictive value on several outcomes. High nodal SUVmax (≥7) predicted for worse outcomes than low nodal SUVmax (<7) in the patients who received dCRT (two-year DMFS, 17% vs. 92%, P < 0.001; NPFS, 14% vs. 81%, P = 0.001; OS, 21% vs. 50%, P = 0.003), but not in those received trimodality. On multivariate analysis of patients receiving dCRT, nodal SUVmax was the strongest independent predictor on DMFS (hazard ratio [HR] 13.93, P < 0.001), NPFS (HR 3.99, P = 0.026), PFS (HR 2.90, P = 0.003), and OS (HR 3.80, P = 0.001). High pretreatment nodal SUVmax predicts worse treatment outcomes for the patients treated with dCRT.
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