Journal of Clinical Medicine (May 2021)

Evaluation of the Feasibility and Effectiveness of Placement of Fully Covered Self-Expandable Metallic Stents via Various Insertion Routes for Benign Biliary Strictures

  • Ko Tomishima,
  • Shigeto Ishii,
  • Toshio Fujisawa,
  • Muneo Ikemura,
  • Mako Ushio,
  • Sho Takahashi,
  • Wataru Yamagata,
  • Yusuke Takasaki,
  • Akinori Suzuki,
  • Koichi Ito,
  • Keiichi Haga,
  • Kazushige Ochiai,
  • Osamu Nomura,
  • Hiroaki Saito,
  • Tomoyoshi Shibuya,
  • Akihito Nagahara,
  • Hiroyuki Isayama

DOI
https://doi.org/10.3390/jcm10112397
Journal volume & issue
Vol. 10, no. 11
p. 2397

Abstract

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Background and aims: The goals of the management of benign biliary stricture (BBS) are to relieve symptoms and resolve short-/long-term stricture. We performed fully covered self-expandable metallic stent (hereafter, FCSEMS) placement for BBS using various methods and investigated the treatment outcomes and adverse events (AEs). Methods: We retrospectively studied patients who underwent FCSEMS placement for refractory BBS through various approaches between January 2017 and February 2020. FCSEMS were placed for 6 months, and an additional FCSEMS was placed if the stricture had not improved. Technical success rate, stricture resolution rate, and AE were measured. Results: A total of 26 patients with BBSs that were difficult to manage with plastic stents were included. The mean overall follow-up period was 43.3 ± 30.7 months. The cause of stricture was postoperative (46%), inflammatory (31%), and chronic pancreatitis (23%). There were four insertion methods: endoscopic with duodenoscopy, with enteroscopy, EUS-guided transmural, and percutaneous transhepatic. The technical success rate was 100%, without any AE. Stricture resolution was obtained in 19 (83%) of 23 cases, except for three cases of death due to other causes. Stent migration and cholangitis occurred in 23% and 6.3%, respectively. Stent fracture occurred in two cases in which FCSEMSs were placed for more than 6 months (7.2 and 10.3 months). Conclusion: FCSEMS placement for refractory BBS via various insertion routes was feasible and effective. FCSEMSs should be exchanged every 6 months until stricture resolution because of stent durability. Further prospective study for confirmation is required, particularly regarding EUS-guided FCSEMS placement.

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