Evidence map›Paper›PMID 41040905›Full record

ArticleDEN open2026

Comparison of the Usefulness of Covered and Uncovered Laser-cut Metal Stents.

Toshio Fujisawa, Masao Toki, Kei Saito, Yuta Hasegawa, Eisuke Iwasaki, Michihiro Saito, Katsuya Kitamura, Ryosuke Tonozuka, Takao Itoi, Ken Ito and 4 more

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in DEN open, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
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

1 citing paper in PubMed.

  1. Article
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.

Toshio FujisawaDepartment of Gastroenterology Graduate School of Medicine Juntendo University Bunkyo Japan.ORCID https://orcid.org/0000-0001-7367-0767
Masao TokiDepartment of Gastroenterology and Hepatology Kyorin University School of Medicine Mitaka Japan.
Kei SaitoDepartment of Gastroenterology Graduate School of Medicine, The University of Tokyo Bunkyo Japan.
Yuta HasegawaDepartment of Gastroenterology Nippon Medical School Tokyo Japan.
Eisuke IwasakiDepartment of Internal Medicine Division of Gastroenterology and Hepatology Keio University School of Medicine Tokyo Japan.
Michihiro SaitoDepartment of Internal Medicine, Division of Gastroenterology and Hepatology Toho University Ohashi Medical Center Tokyo Japan Tokyo Japan.
Katsuya KitamuraDepartment of Gastroenterology and Hepatology Tokyo Medical University Hachioji Medical Center Tokyo Japan.ORCID https://orcid.org/0000-0003-1556-7467
Ryosuke TonozukaDepartment of Gastroenterology and Hepatology Tokyo Medical University Tokyo Japan.
Takao ItoiDepartment of Gastroenterology and Hepatology Tokyo Medical University Tokyo Japan.ORCID https://orcid.org/0000-0002-9433-8437
Ken ItoDepartment of Internal Medicine, Division of Gastroenterology and Hepatology Toho University Ohashi Medical Center Tokyo Japan Tokyo Japan.
Keiko KanekoDepartment of Gastroenterology Nippon Medical School Tokyo Japan.
Naminatsu TakaharaDepartment of Gastroenterology Graduate School of Medicine, The University of Tokyo Bunkyo Japan.ORCID https://orcid.org/0000-0002-1265-3100
Tadakazu HisamatsuDepartment of Gastroenterology and Hepatology Kyorin University School of Medicine Mitaka Japan.ORCID https://orcid.org/0000-0002-1178-3536
Hiroyuki IsayamaDepartment of Gastroenterology Graduate School of Medicine Juntendo University Bunkyo Japan.ORCID https://orcid.org/0000-0002-6206-9236

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Objectives: This study aimed to evaluate the clinical characteristics of laser-cut self-expandable metal stents (SEMS) and to compare the outcomes between covered and uncovered laser-cut SEMS for malignant distal biliary obstruction (MDBO). Methods: A multicenter retrospective analysis was conducted across eight Japanese university hospitals, including 124 patients (81 with covered and 43 with uncovered SEMS). Treatment outcomes, recurrent biliary obstruction (RBO), survival, and treatment-related adverse events (tAEs) were compared. Results: The rates of technical success (100% vs. 100%) and clinical success (94% vs. 98%) were comparable between the two groups. However, the incidence of RBO was significantly higher in the uncovered SEMS group compared to the covered SEMS group (37% vs. 20%, Conclusion: Laser-cut SEMS demonstrated similar efficacy to braided stents in the management of MDBO. The covered laser-cut SEMS was associated with a lower RBO rate than the uncovered SEMS. Additionally, Laser-cut SEMS can be removed if it is fully covered.

Indexed as

coveredlaser‐cut metal stentmalignant distal biliary obstructionremovabilityuncovered

Identifiers

PMID41040905
PMCPMC12487949

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Registered trials

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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.