Endoscopy 2021; 53(01): E11-E12
DOI: 10.1055/a-1167-7861
E-Videos

Successful endoscopic removal of a fully covered self-expandable metallic stent that fractured above a benign distal bile duct stricture

Masatoshi Murakami
Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
,
Nao Fujimori
Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
,
Yuta Suehiro
Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
,
Tomonobu Hioki
Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
,
Kazuhide Matsumoto
Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
,
Takamasa Oono
Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
,
Yoshihiro Ogawa
Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
› Author Affiliations

A 45-year-old man underwent placement of a 10-mm-diameter, fully covered, self-expandable metallic stent (FCSEMS; 6-cm-long Bonastent M-intraductal; Medico’s Hirata, Tokyo, Japan) across the major duodenal papilla to treat a bile duct stricture associated with chronic pancreatitis ([Fig. 1 a]). Four months later, he was admitted to our hospital for removal of the FCSEMS. However, abdominal X-ray and duodenoscopy revealed that the stent had fractured in the mid-portion and the inferior end was located above the distal bile duct stricture ([Fig.1 b]). Because of the benign stricture, it was necessary to retrieve the stent remnants. We attempted to achieve this by several methods, using grasping forceps or balloon catheters, but encountered great difficulty when the fractured stent became stuck in the stricture. After several attempts, we were able to grasp the bottom edge of the fractured stent using biopsy forceps (Radial Jaw 4P; Boston Scientific, Boston, Massachusetts, USA) and remove it through the distal bile duct stricture without any complications by gentle pushing of the endoscope (in the same way as a lithotripsy: twisting the endoscope clockwise while advancing it to the anal side of the duodenum) ([Fig. 2]). Finally, we succeeded in extracting the stent using a snare through the scope.

Zoom Image
Fig. 1 a A 10-mm-diameter, fully covered, self-expandable metallic stent (FCSEMS) placed across the major duodenal papilla in a 45-year-old man. b The FCSEMS fractured in the mid-portion with the inferior end of the stent located above the distal bile duct stricture.
Zoom Image
Fig. 2 a, b We were able to grasp the bottom edge of the fractured FCSEMS using biopsy forceps and remove it through the distal bile duct stricture by gentle pushing of the endoscope. c The fractured FCSEMS.

FCSEMS are primarily used to treat malignant strictures, but recently they have been coming into use to treat benign strictures [1]. Stent fracture is a rare complication of FCSEMS, and there are few reports about FCSEMS fracturing above benign distal bile duct strictures [2] [3]. In the present case, residual stenosis made it very difficult to grasp the FCSEMS and remove it through the stenosis.

No standard methods have yet been established for removal of fractured FCSEMS. Therefore, a variety of devices should be used as appropriate for each individual case.

Video 1 The bottom edge of the fractured FCSEMS was successfully grasped using biopsy forceps and removed through the distal bile duct stricture by gentle pushing of the endoscope.


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Publication History

Publication Date:
19 May 2020 (online)

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