Evidence map›Paper›PMID 37148139›Full record

ArticleEndoscopic ultrasound

A pilot study of Spring Stopper Stents: Novel partially covered self-expandable metallic stents with anti-migration properties for EUS-guided hepaticogastrostomy.

Shigeto Ishii, Hiroyuki Isayama, Naoki Sasahira, Saburo Matsubara, Yousuke Nakai, Toshio Fujisawa, Ko Tomishima, Takashi Sasaki, Kazunaga Ishigaki, Hirofumi Kogure and 4 more

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PubMed Full text at PMC Publisher
In one paragraph

Article in Endoscopic ultrasound. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed, 1 pooled it
7.2field-weighted citation impact, top 2% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

25 citing papers in PubMed, 1 synthesis or guideline pooled it, 28 citations in OpenAlex.

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  5. International Consensus Statements on Endoscopic Ultrasound-Guided Biliary Drainage: Results From the 1st JGES International in 2025.Digestive endoscopy : official journal of the Japan Gastroenterological Endoscopy Society · 2026
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

14 authors at 5 institutions in 1 country.

Shigeto IshiiDepartment of Gastroenterology, Graduate School of Medicine, Juntendo University, Tokyo, Japan.
Hiroyuki IsayamaDepartment of Gastroenterology, Graduate School of Medicine, Juntendo University, Tokyo, Japan.
Naoki SasahiraDepartment of Hepato-Biliary-Pancreatic Medicine, Cancer Institute Hospital of Japanese Foundation for Cancer Research, Tokyo, Japan.
Saburo MatsubaraDepartment of Gastroenterology and Hepatology, Saitama Medical Center, Saitama Medical University, Saitama, Japan.
Yousuke NakaiDepartment of Endoscopy and Endoscopic Surgery, The University of Tokyo Hospital; Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.
Toshio FujisawaDepartment of Gastroenterology, Graduate School of Medicine, Juntendo University, Tokyo, Japan.
Ko TomishimaDepartment of Gastroenterology, Graduate School of Medicine, Juntendo University, Tokyo, Japan.
Takashi SasakiDepartment of Hepato-Biliary-Pancreatic Medicine, Cancer Institute Hospital of Japanese Foundation for Cancer Research, Tokyo, Japan.
Kazunaga IshigakiDepartment of Gastroenterology, Graduate School of Medicine, The University of Tokyo; Department of Chemotherapy, The University of Tokyo Hospital, Tokyo, Japan.
Hirofumi KogureDepartment of Gastroenterology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.
Takeshi OkamotoDepartment of Hepato-Biliary-Pancreatic Medicine, Cancer Institute Hospital of Japanese Foundation for Cancer Research, Tokyo, Japan.
Takeshi OtsukaDepartment of Gastroenterology and Hepatology, Saitama Medical Center, Saitama Medical University, Saitama, Japan.
Yusuke TakasakiDepartment of Gastroenterology, Graduate School of Medicine, Juntendo University, Tokyo, Japan.
Akinori SuzukiDepartment of Gastroenterology, Graduate School of Medicine, Juntendo University, Tokyo, Japan.
Juntendo University · JPJapanese Foundation For Cancer Research · JPSocial Insurance Saitama Chuo Hospital · JPUniversity of Tokyo Hospital · JPThe University of Tokyo · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background and Objectives: EUS-guided hepaticogastrostomy (EUS-HGS) is an effective salvage procedure when conventional endoscopic transpapillary biliary drainage is difficult or fails. However, the risk of stent migration into the abdominal cavity has not been resolved completely. In this study, we evaluated a newly developed partially covered self-expandable metallic stent (PC-SEMS) that has a spring-like anchoring function on the gastric side. Methods: This retrospective pilot study took place at four referral centers in Japan between October 2019 and November 2020. We enrolled 37 cases consecutively who underwent EUS-HGS for unresectable malignant biliary obstruction. Results: The rates of technical and clinical success were 97.3% and 89.2%, respectively. Technical failures included one case in which the stent was dislocated during the removal of the delivery system, requiring additional EUS-HGS on another branch. Early adverse events (AEs) were observed in four patients (10.8%): two with mild peritonitis (5.4%) and one each (2.7%) with fever and bleeding. No late AEs were observed during the mean follow-up period of 5.1 months. All recurrent biliary obstructions (RBOs) were stent occlusions (29.7%). The median cumulative time to RBO was 7.1 months (95% confidence interval, 4.3 to not available). Although stent migration in which the stopper was in contact with the gastric wall on follow-up computed tomography was observed in six patients (16.2%), no migration was observed. Conclusions: The newly developed PC-SEMS is feasible and safe for the EUS-HGS procedure. The spring-like anchoring function on the gastric side is an effective anchor preventing migration.

Indexed as

Biliary drainagebiliary stentEUS-biliary drainageEUS-hepaticogastrostomyinterventional EUS

Identifiers

PMID37148139
PMCPMC10237616
OpenAlexW4367664741

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-SA
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.