Kamarajah, Sivesh KPhillips, Alexander WGriffiths, Ewen AFerri, LorenzoHofstetter, Wayne LMarkar, Sheraz R2024-05-222024-05-222021-07-13Kamarajah SK, Phillips AW, Griffiths EA, Ferri L, Hofstetter WL, Markar SR. Esophagectomy or Total Gastrectomy for Siewert 2 Gastroesophageal Junction (GEJ) Adenocarcinoma? A Registry-Based Analysis. Ann Surg Oncol. 2021 Dec;28(13):8485-8494. doi: 10.1245/s10434-021-10346-x. Epub 2021 Jul 131068-92651534-468110.1245/s10434-021-10346-x34255246http://hdl.handle.net/20.500.14200/4630Backgrounds: Due to a lack of randomized and large studies, the optimal surgical approach for Siewert 2 gastroesophageal junctional (GEJ) adenocarcinoma remains unknown. This population-based cohort study aimed to compare survival between esophagectomy and total gastrectomy for the treatment of Siewert 2 GEJ adenocarcinoma. Methods: Data from the National Cancer Database (NCDB) from 2010 to 2016 was used to identify patients with non-metastatic Siewert 2 GEJ adenocarcinoma who received either esophagectomy (n = 999) or total gastrectomy (n = 8595). Propensity score-matching (PSM) and multivariable analyses were used to account for treatment selection bias. Results: Comparison of the unmatched cohort's baseline demographics showed that the patients who received esophagectomy were younger, had a lower burden of medical comorbidities, and had fewer clinical positive lymph nodes. The patients in the unmatched cohort who received gastrectomy had a significantly shorter overall survival than those who received esophagectomy (median, 47 vs. 68 months [p < 0.001]; 5-year survival, 45 % vs. 53 %). After matching, gastrectomy was associated with significantly reduced survival compared with esophagectomy (median, 51 vs. 68 months [p < 0.001]; 5-year survival, 47 % vs. 53 %), which remained in the adjusted analyses (hazard ratio [HR], 1.22; 95 % confidence interval [CI], 1.09-1.35; p < 0.001). Conclusions: In this large-scale population study with propensity-matching to adjust for confounders, esophagectomy was prognostically superior to gastrectomy for the treatment of Siewert 2 GEJ adenocarcinoma despite comparable lymph node harvest, length of stay, and 90-day mortality. Adequately powered randomized controlled trials with robust surgical quality assurance are the next step in evaluating the prognostic outcomes of these surgical strategies for GEJ cancer.en© 2021. The Author(s).GastroenterologySurgeryArticle