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World J Gastroenterol. Feb 7, 2014; 20(5): 1318-1324
Published online Feb 7, 2014. doi: 10.3748/wjg.v20.i5.1318
Published online Feb 7, 2014. doi: 10.3748/wjg.v20.i5.1318
Risk factors for proximal migration of biliary tube stents
Yoshiaki Kawaguchi, Masami Ogawa, Yohei Kawashima, Hajime Mizukami, Atsuko Maruno, Hiroyuki Ito, Tetsuya Mine, Department of Gastroenterology, Tokai University School of Medicine, Isehara 259-1193, Japan
Author contributions: Kawaguchi Y contributed mainly to this work; Kawaguchi Y designed the research; Kawaguchi Y, Ogawa M, Kawashima Y, Mizukami H, Maruno A and Ito H performed the research; Kawaguchi Y and Mine T analyzed the data; Kawaguchi Y wrote the paper.
Correspondence to: Yoshiaki Kawaguchi, MD, PhD, Department of Gastroenterology, Tokai University School of Medicine, 143 Shimokasuya, Isehara 259-1193, Japan. y711kawa@is.icc.u-tokai.ac.jp
Telephone: +81-463-931121 Fax: +81-463-937134
Received: August 13, 2013
Revised: September 24, 2013
Accepted: September 29, 2013
Published online: February 7, 2014
Revised: September 24, 2013
Accepted: September 29, 2013
Published online: February 7, 2014
Core Tip
Core tip: Endoscopic biliary stenting with a tube stent is an accepted therapy for biliary obstruction due to malignant or benign disease. However, stent migration occurs in 5%-10% of patients undergoing biliary stenting. Therefore, it is important to know the factors affecting biliary tube stent migration. We retrospectively examined endoscopic stent placement in 396 patients with bile duct stenosis, and analyzed the frequency of stent migration and the risk factors (patient factors disease, endoscopic sphincterotomy, location of stenosis, diameter of bile duct) and stent factors (duration of placement, type, diameter, length).