Document Detail

Long term outcome of the WallFlex partially covered stent for unresectable malignant biliary obstruction: a multicenter single-arm prospective study.
MedLine Citation:
PMID:  24088309     Owner:  NLM     Status:  Publisher    
Background /Aims: Covered metallic stent was developed to prevent tumor ingrowth. However, procedural accidents due to its insertion often occur and migration after a long period of time was of a problem. WallFlex partially covered stent (WF) with reduced axial force enabled stenting along the bile duct. We examined the usefulness of WF placement in an unresectable malignant distal biliary obstruction.Methodology: We examined procedural accidents, stent obstruction rate, and patency period caused by WF insertion.Results: 97 patients were analyzed. Procedural accidents caused by WF insertion occurred in 8 patients (7.2%) composed of acute cholecystitis in 3 patients (3.2%), acute pancreatitis in 2 patients (2.1%), acute cholangitis in 1 patient (1%), and other in 1 patient (1%). The stent obstruction rate was 19.6% (19 patients), and obstruction cause includes sludge in 9 patients (9.3%), migration in 4 patients (4.1%), food impaction in 3 patients (3.1%), ingrowth in 1 patient (1%), overgrowth in 0 patients (0%), and unknown in 2 patients (2.1%). The mean stent patency period was 634.918±66.545 (7-946) days. Conclusions: WF has less procedural accidents in being inserted into unresectable malignant biliary obstruction patients with reduced migration rate after a long period of time and low obstruction rate.
Yuji Sakai; Toshio Tsuyuguchi; Nobuto Hirata; Harutoshi Sugiyama; Kenji Shimura; So Nakaji; Toshiyasu Shiratori; Tatsuya Fujimoto; Shin Tsuchiya; Shigeru Mikami; Osamu Yokosuka
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-10-2
Journal Detail:
Title:  Hepato-gastroenterology     Volume:  60     ISSN:  0172-6390     ISO Abbreviation:  Hepatogastroenterology     Publication Date:  2013 Oct 
Date Detail:
Created Date:  2013-10-3     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8007849     Medline TA:  Hepatogastroenterology     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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