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Early malfunction of a biliary self-expandable metal stent with an antireflux valve: A case report

Authors
Kim, Sang HoonOh, Chi HyukLee, Jae MinChoi, Seong JiChoi, Hyuk SoonKim, Eun SunKeum, BoraJeen, Yoon TaeChun, Hoon JaiLee, Hong SikKim, Chang Duck
Issue Date
Apr-2020
Publisher
Lippincott Williams & Wilkins Ltd.
Keywords
antireflux valve; bile duct obstruction; expanded polytetrafluoroethylene; malfunction; self-expandable metal stent
Citation
Medicine, v.99, no.16
Indexed
SCIE
SCOPUS
Journal Title
Medicine
Volume
99
Number
16
URI
https://scholarworks.korea.ac.kr/kumedicine/handle/2020.sw.kumedicine/33758
DOI
10.1097/MD.0000000000019750
ISSN
0025-7974
Abstract
Rationale: Biliary drainage is essential to resolve jaundice in patients with malignant biliary obstruction. Recently, a biliary self-expandable metal stent (SEMS) with an antireflux valve was developed to prevent enteric-biliary reflux. Its antireflux valve was made of expanded polytetrafluoroethylene (ePTFE), a biostable and biocompatible material. Changes of the ePTFE membrane of medical devices are rarely reported in clinical practice. Patient concerns: A 59-year-old woman was admitted with a complaint of jaundice. Around 1 month before, she underwent endoscopic biliary stenting using a SEMS with an antireflux valve. Diagnosis: Acute cholangitis due to stent clogging was detected on abdominal computed tomography. Interventions: Endoscopic retrograde cholangiopancreatography and removal of the SEMS with deformity were performed. Outcomes: The obstructive jaundice was rapidly resolved after the removal of the clogged stent. Lessons: Although the ePTFE membrane is widely used to make medical devices, unexpected changes could occur after the membrane is exposed to bile juice in the duodenum. When performing biliary stenting using a SEMS with an antireflux valve, both the risk of early malfunction and the benefit of the antireflux effect should be considered.
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5. Others > Others(Medicine) > 1. Journal Articles
2. Clinical Science > Department of Gastroenterology and Hepatology > 1. Journal Articles

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Kim, Eun Sun
Anam Hospital (Department of Gastroenterology and Hepatology, Anam Hospital)
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