title: Mucosal hyperplasia in an uncovered portion of partially covered metal stent.
abstract: Covered self-expandable metal stents were developed to overcome tumor in-growth through the metal mesh. Stent migration is one of their malfunctions. Recently, the partially covered wallflex stent (PCWS) was developed with flared ends to prevent migration However, difficulty has been reported in its removal. We describe the removal of a PCWS embedded in mucosal hyperplasia at the uncovered proximal flared end, visualized by using SpyGlass cholangioscopy.
authors.affiliation: Kazumichi Kawakubo, Hiroyuki Isayama, Naoki Sasahira, Hirofumi Kogure, Koji Miyabayashi, Kenji Hirano, Minoru Tada, Kazuhiko Koike, Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo, Tokyo 113-8655, Japan.
authors.forename: Kazumichi
authors.initials: K
authors.lastname: Kawakubo
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Isayama
authors.forename: Naoki
authors.initials: N
authors.lastname: Sasahira
authors.forename: Hirofumi
authors.initials: H
authors.lastname: Kogure
authors.forename: Koji
authors.initials: K
authors.lastname: Miyabayashi
authors.forename: Kenji
authors.initials: K
authors.lastname: Hirano
authors.forename: Minoru
authors.initials: M
authors.lastname: Tada
authors.forename: Kazuhiko
authors.initials: K
authors.lastname: Koike
keywords: Complication; Mucosal hyperplasia; Self-expandable metal stent; Stent removal