Evidence map›Paper›PMID 40844601›Full record

ArticleSurgery today2026

Impact of obesity on the short-term outcomes of robotic surgery for rectal cancer: a Japanese multicenter study.

Hiroki Katayama, Tetsuro Tominaga, Yuma Takamura, Shintaro Hashimoto, Mariko Yamashita, Shoko Tei, Rika Ono, Mitsutoshi Ishii, Makoto Hisanaga, Kaido Oishi and 5 more

Erratum issuedAbstract readMulticenter Study
PubMed Publisher
In one paragraph

Article in Surgery today, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing 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

2 citing papers in PubMed.

  1. Metabolic Modulation in Cancer Care: The Potential Role of Glucagon-Like Peptide-1 Receptor Agonists.Journal of clinical oncology : official journal of the American Society of Clinical Oncology · 2026
    Review
  2. Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

15 authors.

Hiroki KatayamaDivision of Surgical Oncology, Department of Surgery, Nagasaki University Graduate School of Biomedical Science, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan.
Tetsuro TominagaDivision of Surgical Oncology, Department of Surgery, Nagasaki University Graduate School of Biomedical Science, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan.
Yuma TakamuraDivision of Surgical Oncology, Department of Surgery, Nagasaki University Graduate School of Biomedical Science, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan.
Shintaro HashimotoDivision of Surgical Oncology, Department of Surgery, Nagasaki University Graduate School of Biomedical Science, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan.
Mariko YamashitaDivision of Surgical Oncology, Department of Surgery, Nagasaki University Graduate School of Biomedical Science, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan.
Shoko TeiDivision of Surgical Oncology, Department of Surgery, Nagasaki University Graduate School of Biomedical Science, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan.
Rika OnoDepartment of Surgery, Sasebo City General Hospital, 9-3 Hirasemachi, Nagasaki, 857-8511, Japan.
Mitsutoshi IshiiDepartment of Surgery, Sasebo City General Hospital, 9-3 Hirasemachi, Nagasaki, 857-8511, Japan.
Makoto HisanagaDepartment of Surgery, Sasebo City General Hospital, 9-3 Hirasemachi, Nagasaki, 857-8511, Japan.
Kaido OishiDepartment of Surgery, National Hospital Organization Nagasaki Medical Center, 1-1001-1 Omura, Nagasaki, 856-8562, Japan.
Masaaki MoriyamaDepartment of Surgery, Isahaya General Hospital, 24-1 Isahaya, Nagasaki, 854-8501, Japan.
Fumitake UchidaDepartment of Surgery, Ureshino Medical Center, 4279-3 Ureshino, Saga, 843-0393, Japan.
Toshio ShiraishiDepartment of Surgery, Saiseikai Nagasaki Hospital, 2-5-1 Katafuchi, Nagasaki, 850-0003, Japan.
Takashi NonakaColorectal Surgery, Department of Surgery, Nagasaki University Hospital, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan. tnonaka@nagasaki-u.ac.jp.
Keitaro MatsumotoDivision of Surgical Oncology, Department of Surgery, Nagasaki University Graduate School of Biomedical Science, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThe safety and efficacy of robotic surgery in obese patients with rectal cancer remain unclear.

methodsRectal cancer surgery was performed in 1145 patients at Nagasaki University and seven affiliated institutions between April 2016 and December 2024. Of these, 353 patients who were obese (body mass index, ≥ 25 kg/m

resultsThe O group showed significantly greater frequencies of poor PS (R group vs. L group vs. O group; 5.3% vs. 8.4% vs. 33.3%, p = 0.002) and postoperative complications (9.3% vs. 18.7% vs. 40.0%, p = 0.011). A multivariate analysis identified that open surgery (odds ratio 6.888, 95% confidence interval 1.846-15.704; p = 0.004), laparoscopic surgery (odds ratio 2.197; 95% confidence interval 1.941-5.162; p = 0.048), and preoperative treatment (odds ratio 2.516; 95% confidence interval 1.284-4.930; p = 0.007) were independent predictors of postoperative complications.

conclusionRobotic surgery has shown good postoperative outcomes in obese patients, and it may, therefore, be useful in reducing complications, particularly in patients who have undergone prior treatment.

Indexed as

ObesityRectal NeoplasmsRobotic Surgical ProceduresAdultAgedAged, 80 and overBody Mass IndexEast Asian PeopleFemaleHumansJapanLaparoscopyMaleMiddle AgedPostoperative ComplicationsTime FactorsObesityRectal cancerRobotic surgery

Identifiers

PMID40844601

What OpenQuestion holds

Textmetadata
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.