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  • Title: Distal Pancreatectomy With En Bloc Celiac Axis Resection for Locally Advanced Pancreatic Cancer: A Systematic Review and Meta-Analysis.
    Author: Gong H, Ma R, Gong J, Cai C, Song Z, Xu B.
    Journal: Medicine (Baltimore); 2016 Mar; 95(10):e3061. PubMed ID: 26962836.
    Abstract:
    Although distal pancreatectomy with en bloc celiac resection (DP-CAR) is used to treat locally advanced pancreatic cancer, the advantages and disadvantages of this surgical procedure remain unclear. The purpose of this study was to evaluate its clinical safety and efficacy.Studies regarding DP-CAR were retrieved from the following databases: PubMed, EMBASE, Web of Science, Cochrane Library, and Chinese electronic databases. Articles were selected according to predesigned inclusion criteria, and data were extracted according to predesigned sheets. Clinical, oncologic, and survival outcomes of DP-CAR were systematically reviewed by hazard ratios (HRs) or odds ratio (OR) using fixed- or random-effects models.Eighteen studies were included. DP-CAR had a longer operating time and greater intraoperative blood loss compared to distal pancreatectomy (DP). A high incidence of vascular reconstruction occurred in DP-CAR: 11.53% (95%CI: 6.88-18.68%) for artery and 33.28% (95%CI: 20.45-49.19%) for vein. The pooled R0 resection rate of DP-CAR was 72.79% (95% CI, 46.19-89.29%). Higher mortality and morbidity rates were seen in DP-CAR, but no significant differences were detected compared to DP; the pooled OR was 1.798 for mortality (95% CI, 0.360-8.989) and 2.106 for morbidity (95% CI, 0.828-5.353). The pooled incidence of postoperative pancreatic fistula (POPF) was 31.31% (95%CI, 23.69-40.12%) in DP-CAR, similar to that of DP (OR = 1.07; 95%CI, 0.52-2.20). The pooled HR against DP-CAR was 5.67 (95%CI, 1.48-21.75) for delayed gastric emptying. The pooled rate of reoperation was 9.74% (95%CI, 4.56-19.59%) in DP-CAR. The combined 1-, 2-, and 3-year survival rates in DP-CAR were 65.22% (49.32-78.34%), 30.20% (21.50-40. 60%), and 18.70% (10.89-30.13%), respectively. The estimated means and medians for survival time in DP-CAR patients were 24.12 (95%CI, 18.26-29.98) months and 17.00 (95%CI, 13.52-20.48) months, respectively. There were no significant differences regarding postoperative 1-, 2-, and 3-year survival rates between DP-CAR and DP, whereas DP-CAR had a better 1-year survival rate compared to palliative treatments. The pooled HR for overall survival between DP-CAR and DP was 1.36 (95%CI: 0.997-1.850); the pooled HR favoring DP-CAR was 0.38 (95%CI: 0.25-0.58) for overall survival compared to palliative treatments. The rate of cancer-related pain relief from DP-CAR was 89.20% (95%CI, 77.85-95.10%). The pooled incidence of postoperative diarrhea was 37.10% (95%CI, 20.79-57.00%); however, most diarrhea was effectively controlled.DP-CAR is feasible and acceptable in terms of its survival benefits and improved quality of life. However, it should be performed with caution due to its high postoperative morbidity.
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