Evidence map›Paper›PMID 42240715›Full record

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

Comparison of oncological outcomes between robotic and laparoscopic surgeries for gastric cancer: a multi-institutional cohort study in Japan.

Haruku Fujita, Tatsuto Nishigori, Yoshito Yamashita, Hisahiro Hosogi, Seiichiro Kanaya, Michihiro Yamamoto, Yosuke Kinjo, Masato Kondo, Hiroaki Hata, Hironori Kawada and 22 more

Abstract readMulticenter StudyComparative Study
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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. Not yet cited in PubMed.

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1 · What the graph read from it

What it found

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2 · The registry

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

32 authors.

Haruku FujitaDepartment of Surgery, Graduate School of Medicine, Kyoto University, 54 Shogoin-Kawahara-Cho, Sakyo-Ku, Kyoto, 606-8507, Japan.
Tatsuto NishigoriDepartment of Surgery, Graduate School of Medicine, Kyoto University, 54 Shogoin-Kawahara-Cho, Sakyo-Ku, Kyoto, 606-8507, Japan. nsgr@kuhp.kyoto-u.ac.jp.ORCID http://orcid.org/0000-0002-4969-5590
Yoshito YamashitaDepartment of Gastroenterological Surgery, Japanese Red Cross Wakayama Medical Center, Wakayama, Japan.
Hisahiro HosogiDepartment of Surgery, Osaka Red Cross Hospital, Osaka, Japan.
Seiichiro KanayaDepartment of Surgery, Osaka Red Cross Hospital, Osaka, Japan.
Michihiro YamamotoDepartment of Gastrointestinal Surgery, Tenri Hospital, Tenri, Japan.
Yosuke KinjoDepartment of Gastroenterological Surgery and Oncology, Himeji Medical Center, Himeji, Japan.
Masato KondoDepartment of Surgery, Kobe City Medical Center General Hospital, Kobe, Japan.
Hiroaki HataDepartment of Surgery, National Hospital Organization Kyoto Medical Center, Kyoto, Japan.
Hironori KawadaDepartment of Surgery, Hyogo Prefectural Amagasaki General Medical Center, Amagasaki, Japan.
Koichi MatsuoDepartment of Surgery, Kyoto City Hospital, Kyoto, Japan.
Atsushi ItamiDepartment of Surgery, Kobe City Nishi-Kobe Medical Center, Kobe, Japan.
Kenjiro HiraiDepartment of Surgery, Japanese Red Cross Otsu Hospital, Otsu, Japan.
Yuichiro KawamuraDepartment of Surgery, Kokura Memorial Hospital, Fukuoka, Japan.
Dai ManakaDepartment of Surgery, Kyoto Katsura Hospital, Kyoto, Japan.
Sanae NakajimaDepartment of Surgery, Kobe City Medical Center West Hospital, Kobe, Japan.
Hiroshi OkabeDepartment of Gastroenterological Surgery, New Tokyo Hospital, Matsudo, Japan.
Kosuke TodaDepartment of Surgery, Shiga General Hospital, Moriyama, Japan.
Eiji TanakaDepartment of Surgery, Kitano Hospital, Osaka, Japan.
Tetsuo ItoDepartment of Gastroenterological Surgery, Osaka Saiseikai-Noe Hospital, Osaka, Japan.
Akira MikiDepartment of Gastroenterological Surgery, Toyooka Hospital, Toyooka, Japan.
Kiyotaka KawaguchiDepartment of Surgery, Graduate School of Medicine, Kyoto University, 54 Shogoin-Kawahara-Cho, Sakyo-Ku, Kyoto, 606-8507, Japan.
Ryosuke MizunoDepartment of Surgery, Graduate School of Medicine, Kyoto University, 54 Shogoin-Kawahara-Cho, Sakyo-Ku, Kyoto, 606-8507, Japan.
Masazumi SakaguchiDepartment of Surgery, Graduate School of Medicine, Kyoto University, 54 Shogoin-Kawahara-Cho, Sakyo-Ku, Kyoto, 606-8507, Japan.
Shintaro OkumuraDepartment of Surgery, Graduate School of Medicine, Kyoto University, 54 Shogoin-Kawahara-Cho, Sakyo-Ku, Kyoto, 606-8507, Japan.
Shigeo HisamoriDepartment of Surgery, Graduate School of Medicine, Kyoto University, 54 Shogoin-Kawahara-Cho, Sakyo-Ku, Kyoto, 606-8507, Japan.
Shigeru TsunodaDepartment of Surgery, Graduate School of Medicine, Kyoto University, 54 Shogoin-Kawahara-Cho, Sakyo-Ku, Kyoto, 606-8507, Japan.
Koya HidaDepartment of Surgery, Graduate School of Medicine, Kyoto University, 54 Shogoin-Kawahara-Cho, Sakyo-Ku, Kyoto, 606-8507, Japan.
Kentaro UenoDepartment of Biomedical Statistics and Bioinformatics, Graduate School of Medicine, Kyoto University, Kyoto, Japan.
Shiro TanakaDepartment of Clinical Biostatistics, Graduate School of Medicine, Kyoto University, Kyoto, Japan.
Kazutaka ObamaDepartment of Surgery, Graduate School of Medicine, Kyoto University, 54 Shogoin-Kawahara-Cho, Sakyo-Ku, Kyoto, 606-8507, Japan.
Kyoto Esophageal, Gastric Surgery Study Group

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe oncological safety and benefits of robotic gastrectomy (RG) in daily clinical practice remain unknown. This study aimed to compare 3-year outcomes between RG and laparoscopic gastrectomy (LG) for gastric cancer.

methodsThis multi-institutional retrospective cohort study was conducted in 19 Japanese hospitals and included patients with gastric cancer who underwent minimally invasive gastrectomy between January 2017 and December 2020. To balance baseline characteristics between patients who underwent RG and LG, 1:2 propensity score matching was conducted using 28 variables. The primary endpoint was 3-year relapse-free survival (RFS), with non-inferiority defined as the upper limit of 95% confidence interval (CI) for a hazard ratio (HR) of <1.33.

resultsIn this study, 3181 patients were included. After propensity score matching, 676 and 1352 patients from the RG and LG groups, respectively, were included in the analysis. In the matched cohort, RG was associated with longer operation time and less blood loss, whereas postoperative complications were comparable between the groups. Three-year RFS rate was 84.1% in the RG group and 84.3% in the LG group (HR, 1.02; 95% CI, 0.81-1.29; p = 0.873), indicating that RG met the criterion for non-inferiority to LG. The 3-year overall survival rate was 90.6% and 89.2% in the RG and LG groups, respectively (HR, 0.86; 95% CI, 0.64-1.17; p = 0.340). Subgroup analysis revealed that RG was associated with significantly better RFS in patients with pathological T4 disease (HR, 0.68; 95% CI, 0.47-0.99; p = 0.049).

conclusionsRG was not inferior to LG with respect to oncological outcomes.

Indexed as

GastrectomyLaparoscopyRobotic Surgical ProceduresStomach NeoplasmsAgedFemaleHumansJapanMaleMiddle AgedPostoperative ComplicationsRetrospective StudiesSurvival RateTreatment OutcomeGastrectomyLaparoscopyRobotic surgical proceduresStomach neoplasmsTreatment outcome

Identifiers

PMID42240715

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