Evidence map›Paper›PMID 40607292›Full record

ArticleAnnals of gastroenterological surgery2025

Regional and patient characteristic disparities in the outcomes of minimally invasive surgery for colorectal cancer in Japan.

Atsushi Hamabe, Arata Takahashi, Hiraku Kumamaru, Hiroshi Hasegawa, Koki Otsuka, Yoshihiro Kakeji, Ken Shirabe, Masafumi Inomata, Yuko Kitagawa, Ichiro Takemasa

Abstract read
In one paragraph

Article in Annals of gastroenterological surgery, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing 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

3 citing papers in PubMed.

  1. Article
  2. Article
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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

10 authors.

Atsushi HamabeDepartment of Surgery, Surgical Oncology and Science Sapporo Medical University Sapporo Japan.ORCID https://orcid.org/0000-0001-5535-3514
Arata TakahashiDepartment of Health Policy and Management, School of Medicine Keio University Tokyo Japan.
Hiraku KumamaruDepartment of Healthcare Quality Assessment, Graduate School of Medicine The University of Tokyo Tokyo Japan.
Hiroshi HasegawaDivision of Gastrointestinal Surgery, Department of Surgery, Graduate School of Medicine Kobe University Kobe Japan.ORCID https://orcid.org/0000-0003-1545-0509
Koki OtsukaProject Management Subcommittee, The Japanese Society of Gastroenterological Surgery Tokyo Japan.
Yoshihiro KakejiDivision of Gastrointestinal Surgery, Department of Surgery, Graduate School of Medicine Kobe University Kobe Japan.ORCID https://orcid.org/0000-0002-2727-0241
Ken ShirabeDepartment of General Surgical Science Gunma University Graduate School of Medicine Maebashi Gunma Japan.
Masafumi InomataDepartment of Gastroenterological and Pediatric Surgery, Faculty of Medicine Oita University Oita Japan.
Yuko KitagawaDepartment of Surgery Keio University School of Medicine Tokyo Japan.
Ichiro TakemasaDepartment of Gastroenterological Surgery Osaka International Medical and Science Center, Osaka Keisatsu Hospital Osaka Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Aim: The use of minimally invasive surgery, including laparoscopic and robotic surgery, for gastrointestinal cancer has been rapidly increasing. This study aimed to clarify whether differences in minimally invasive surgery outcomes are associated with regional and patient characteristics. Methods: A total of 123 771 right hemicolectomy and 126 965 low anterior resection cases performed between 2013 and 2019 were selected from the National Clinical Database for analysis. Patients were stratified by regional and economic variables, and open and minimally invasive surgical outcomes were evaluated. Results: In secondary medical regions characterized by urban settings and numerous designated cancer care hospitals, the observed 30-day mortality of low anterior resections was lower only in the minimally invasive surgery group. For right hemicolectomies in regions with many designated cancer care hospitals, the observed incidence of postoperative complications was also lower in the minimally invasive group. Residents of high-income areas undergoing low anterior resection had a lower frequency of 30-day reoperation regardless of the type of surgery and a lower 30-day mortality in the minimally invasive group. For both right hemicolectomy and low anterior resection, patients with longer travel distances had fewer postoperative complications and lower 30-day reoperation rates in the minimally invasive group than in the open surgery group. Conclusion: This study found regional and patient characteristic disparities in minimally invasive surgical outcomes; national policies should be implemented to address these inequities.

Indexed as

colorectal neoplasmsminimally invasive surgical proceduresNational Clinical Database

Identifiers

PMID40607292
PMCPMC12211097

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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.