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  • Title: Analysis of high risk factors for endoscopic retrograde cholangiopancreatography biliary metallic stenting after malignant duodenal stricture SEMS implantation.
    Author: Yao JF, Zhang L, Wu H.
    Journal: J Biol Regul Homeost Agents; 2016; 30(3):743-748. PubMed ID: 27655491.
    Abstract:
    The aim of this study was to explore the success rates and high risk factors for endoscopic retrograde cholangiopancreatography (ERCP) biliary metallic stenting after self-expandable metallic stent (SEMS) implantation in patients with malignant duodenal stricture. A retrospective cohort study was conducted. Forty-two unresectable patients with malignant duodenal stricture who received endoscopic SEMS implantation between February 2012 and February, 2015 in the Department of Digestive Diseases of Xijing Hospital were enrolled in the study. These patients underwent subsequent ERCP biliary metallic stenting due to malignant biliary stricture. The clinical and iconography materials of these patients were retrospectively analyzed. ERCP biliary metallic stenting was successfully carried out on 71.4% of patients with previous malignant duodenal stricture SEMS implantation. In type 1 duodenal strictures 88% success rate of ERCP guided biliary decompression was obtained vs 18.2% success rate in Type 2 duodenal strictures. In both type 1 and 2 duodenal strictures of a length greater than 3.5 cm, ERCP was 44.4% successful vs 89% successful for strictures less than 3.5cm. Multiple regression analysis revealed that duodenal stricture length ≥3.5 cm (OR, 9.85; 95% CI, 1.21-79.88) and 80 or 90 mm duodenal stent (OR, 17.03; 95% CI, 1.99-145.81) were independent risk factors for the failure of ERCP (biliary drainage or biliary decompression) in the patients with previous SEMS implantation. Moreover, duodenal stents of 60 mm had a higher success rate of 88%, vs 18.2% in 80-90 mm stents. Nevertheless, the success rates of type III strictures were 100%, including synchronous and asynchronous implantation of SEMS implantation and ERCP biliary metallic stenting. For unresectable malignant duodenal stricture patients with SEMS implantation, subsequent ERCP biliary metallic stenting was safe and effective. The length of malignant duodenal stricture, longer duodenal stents and type II duodenal stricture were high risk factors for the failure of ERCP biliary metallic stenting.
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