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Removal of Duckbill-type laser-cut anti-reflux metal stents: Clinical evaluation and in vitro study.
DEN Open
April 2023
Department of Hepato-Biliary-Pancreatic Medicine, Cancer Institute Hospital Japanese Foundation for Cancer Research Tokyo Japan.
Objectives: Duckbill-type metal stent (DMS) was the first laser-cut biliary metal stent with an anti-reflux valve. Removal of DMS is believed to be difficult and relevant reports are scarce. This study aims to investigate the feasibility of DMS removal.
View Article and Find Full Text PDFBackground: The usefulness of duckbill-type anti-reflux metal stent (DMS) in self-expandable metal stent-naïve pancreatic cancer (PC) patients has not been well-studied. This study aimed to evaluate the efficacy and safety of DMS in such patients.
Methods: We analyzed consecutive patients with unresectable PC who received a covered metal stent (CMS) as the initial self-expandable metal stent at our institution.
Long-term outcomes of duckbill-type anti-reflux metal stents versus conventional covered metal stents in reinterventions after covered biliary metal stent dysfunction in unresectable pancreatic cancer.
Surg Endosc
May 2023
Department of Hepato-Biliary-Pancreatic Medicine, Cancer Institute Hospital of Japanese Foundation for Cancer Research, 3-8-31, Ariake, Koto, Tokyo, 135-8550, Japan.
Background: The use of duckbill-type anti-reflux metal stents (DMS) in reinterventions after covered metal stent (CMS) dysfunction has been reported in patients with distal malignant biliary obstruction (MBO). However, the superiority of DMS over conventional CMS (c-CMS) has not been established. Therefore, we conducted this retrospective study to evaluate the long-term efficacy and safety of DMS as a second stent in comparison with c-CMS.
View Article and Find Full Text PDFEfficacy and safety of a novel anti-reflux metal stent during neoadjuvant chemotherapy for pancreatic cancer: A prospective multicenter exploratory study.
J Hepatobiliary Pancreat Sci
April 2023
Digestive and Lifestyle Diseases, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan.
Background/purpose: The benefits of anti-reflux metal stents, used for treating biliary obstruction in patients receiving neoadjuvant chemotherapy (NAC) for pancreatic cancer, are yet unknown. Herein, the safety and efficacy of the novel duckbill-type anti-reflux metal stent (D-ARMS) were prospectively evaluated for biliary drainage. Additionally, the incidence of recurrent biliary obstruction (RBO) after placement of D-ARMS vs conventional covered self-expandable metal stents (CCSEMSs) was retrospectively compared.
View Article and Find Full Text PDFArticle Synopsis
- A study was conducted to assess the effectiveness and safety of a duckbill-type anti-reflux self-expandable metal stent (D-ARMS) for treating distal malignant biliary obstruction associated with duodenal invasion.* -
- Ten patients were analyzed; results showed no instances of non-occlusion cholangitis, but 20% experienced recurrent biliary obstruction (RBO), primarily due to sludge and overgrowth.* -
- The D-ARMS demonstrated promise as a suitable option for this condition, with a median time to RBO of 382 days and only one adverse event reported (cholecystitis).*
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