Evidence map›Paper›PMID 42189454›Full record

ArticleGastric cancer : official journal of the International Gastric Cancer Association and the Japanese Gastric Cancer Association2026

Clinical advantages of robotic gastrectomy for gastric cancer over conventional laparoscopic approach: a retrospective cohort study using a nationwide registry database in Japan.

Susumu Shibasaki, Hideki Endo, Hiroyuki Yamamoto, Masaya Nakauchi, Tsuyoshi Tanaka, Shigeo Hisamori, Kazutaka Obama, Hirokazu Noshiro, Koshi Kumagai, Hideki Ueno and 3 more

Abstract read
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In one paragraph

Article in Gastric cancer : official journal of the International Gastric Cancer Association and the Japanese Gastric Cancer Association, 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

13 authors.

Susumu ShibasakiDepartment of Surgery, Fujita Health University Okazaki Medical Center, 2-6-1, Nishi, Harisaki, Okazaki, Aichi, 444-0829, Japan.
Hideki EndoDepartment of Healthcare Quality Assessment, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.
Hiroyuki YamamotoDepartment of Healthcare Quality Assessment, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.
Masaya NakauchiDepartment of Advanced Robotic and Endoscopic Surgery, Fujita Health University, Toyoake, Japan.
Tsuyoshi TanakaDepartment of Surgery, Fujita Health University, Toyoake, Aichi, Japan.
Shigeo HisamoriDepartment of Surgery, Kyoto University Graduate School of Medicine, Kyoto, Japan.
Kazutaka ObamaDepartment of Surgery, Kyoto University Graduate School of Medicine, Kyoto, Japan.
Hirokazu NoshiroDepartment of Surgery, Saga University Faculty of Medicine, Saga, Japan.
Koshi KumagaiProject Management Subcommittee, The Japanese Society of Gastroenterological Surgery, Tokyo, Japan.
Hideki UenoDatabase Committee, The Japanese Society of Gastroenterological Surgery, Tokyo, Japan.
Ken ShirabeThe Japanese Society of Gastroenterological Surgery, Tokyo, Japan.
Ichiro UyamaDepartment of Advanced Robotic and Endoscopic Surgery, Fujita Health University, Toyoake, Japan.
Koichi SudaDepartment of Surgery, Fujita Health University, Toyoake, Aichi, Japan. ko-suda@nifty.com.ORCID http://orcid.org/0000-0002-0423-1565

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo evaluate contemporary short-term outcomes of robotic gastrectomy (RG) approximately 5 years after its widespread implementation, compared with laparoscopic gastrectomy (LG) using a nationwide Japanese database.

backgroundRG has been introduced to overcome the technical limitations of LG; however, its real-world clinical advantages remain to be fully defined.

methodsThis retrospective study used the Japanese National Clinical Database to identify patients with gastric cancer who underwent minimally invasive distal gastrectomy (DG) or total gastrectomy (TG) between January 2023 and December 2024. Patients were classified as undergoing robotic (RDG or RTG) or laparoscopic (LDG or LTG) procedures. Propensity score matching was performed separately for the DG and TG cohorts to adjust for patient-, tumor-, and hospital-related confounders. The primary outcome was postoperative morbidity within 30 days (Clavien-Dindo grade ≥ IIIa).

resultsAfter propensity score matching, 9743 RDG-LDG pairs and 1617 RTG-LTG pairs were analyzed. RDG was associated with a significantly lower morbidity rate than LDG (4.3 vs. 4.9%, P = 0.049). Despite longer operative time, RDG was associated with lower blood loss, lower conversion rates, fewer intra-abdominal infectious complications, and shorter postoperative hospital stay than LDG. Overall morbidity did not differ significantly between RTG and LTG (8.7 vs. 8.3%, P = 0.66); however, RTG was associated with lower blood loss, lower conversion rates, and shorter hospital stay.

conclusionsRDG was associated with improvements in multiple short-term outcomes, whereas RTG still did not improve the primary outcome measure.

Indexed as

GastrectomyLaparoscopyRobotic Surgical ProceduresStomach NeoplasmsAgedDatabases, FactualFemaleHumansJapanMaleMiddle AgedPostoperative ComplicationsPropensity ScoreRegistriesRetrospective StudiesGastrectomyMinimally invasive surgical proceduresPostoperative complicationsRobotic surgical procedureStomach neoplasms

Identifiers

PMID42189454

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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.