Fully covered self-expandable metal stent, Benign biliary strictures"/> The Efficacy and Safety of Fully Covered Self-expandable Metal Stents in Benign Extrahepatic Biliary Strictures
Korean J Gastrointest Endosc > Volume 42(1); 2011 > Article
Korean Journal of Gastrointestinal Endoscopy 2011;42(1): 11-19.
양성 간외 담관 협착에서 완전 피막형 자가팽창성 금속 스텐트의 유용성과 안전성
김병욱ㆍ구자충ㆍ조영심ㆍ한정호ㆍ윤순만ㆍ채희복ㆍ박선미ㆍ윤세진
충북대학교 의과대학 내과학교실
The Efficacy and Safety of Fully Covered Self-expandable Metal Stents in Benign Extrahepatic Biliary Strictures
Byeong Uk Kim, M.D., Ja Chung Goo, M.D., Young Shim Cho, M.D., Jung Ho Han, M.D., Soon Man Yoon, M.D., Hee Bok Chae, M.D., Seon Mee Park, M.D. and Sei Jin Youn, M.D.
Department of Internal Medicine, Chungbuk National University College of Medicine, Cheongju, Korea
Abstract

Background/Aims:
For the endoscopic treatment of benign biliary strictures (BBS), it has been a drawback to use plastic stents or uncovered self-expandable metal stents. We investigated the efficacy and safety of temporary placing fully covered self-expandable metal stents (FCSEMS) in BBS.


Methods:
We enrolled 12 cases that followed up more than 6 months after insertion of a FCSEMS in BBS via ERCP. The cohort consisted of 9 patients with recurrent cholangitis, 2 patients with postcholecystectomy and 1 patient with chronic pancreatitis. The efficacy was assessed according to the resolution of strictures and also the restricture after stent removal, and the safety was evaluated according to the complications associated with stent placement. Finally, the removability of FCSEMSs was assessed.


Results:
The median time of FCSEMS placement was 6.0 months. Resolution of the BBS was confirmed in 8 cases (67%) after a median post-removal follow-up of 8.5 months. Restricture after stent removal happened in 4 cases (33%). The complications were severe abdominal pain (n=2), pancreatic abscess (n=1) and stent migration (n=6). In 7 cases, all the FCSEMSs were successfully removed by grasping them with forceps.


Conclusions:
Temporary placement of a FCSEMS in BBS showed good therapeutic effects, relative safety and easy removability. Further evaluation is needed for determining the causes of restricture and for developing a new stent with antimigration features. (Korean J Gastrointest Endosc 2011;42:11-19)

Key Words: Fully covered self-expandable metal stent, Benign biliary strictures
주요어: 완전 피막형 자가팽창성 금속 스텐트, 양성 담관 협착
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