Evidence map›Paper›PMID 40459070›Full record

Trial reportBJS open2025

Effect of transverse versus midline periumbilical incision on incisional hernia and short-term outcomes after laparoscopic colon cancer surgery: multicentre, open-label, randomized clinical trial.

Soo Young Lee, Soo Yeun Park, Gi Won Ha, Gyung Mo Son, Dong Keon Yon, Chang Hyun Kim, Korean ColoRectal surgeOn Study group of the Southern province (K-CROSS)

Abstract readRandomized Controlled TrialMulticenter StudyComparative Study
In one paragraph

Trial report in BJS open, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. 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. Analysis of morphological patterns in incisional hernias following different surgical approaches.Hernia : the journal of hernias and abdominal wall surgery · 2026
    Article
  2. 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

7 authors.

Soo Young LeeDepartment of Surgery, Chonnam National University Hwasun Hospital and Medical School, Hwasun, Korea.ORCID 0000-0002-9200-7933
Soo Yeun ParkColorectal Cancer Centre, Kyungpook National University Chilgok Hospital, School of Medicine, Kyungpook National University, Daegu, Korea.
Gi Won HaDepartment of Surgery, Research Institute of Clinical Medicine of Jeonbuk National University-Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, Korea.
Gyung Mo SonDepartment of Surgery, Pusan National University Yangsan Hospital, School of Medicine, Pusan National University, Yangsan, Korea.
Dong Keon YonCentre for Digital Health, Medical Science Research Institute, Kyung Hee University Medical Centre, Kyung Hee University College of Medicine, Seoul, Korea.ORCID 0000-0003-1628-9948
Chang Hyun KimDepartment of Surgery, Chonnam National University Hwasun Hospital and Medical School, Hwasun, Korea.ORCID 0000-0002-1954-189X
Korean ColoRectal surgeOn Study group of the Southern province (K-CROSS)

Funding

Chonnam National University Hwasun HospitalInstitute for Biomedical Science HCRI21027
6 · The paper itself

Abstract

backgroundThis study aimed to assess the effect of a periumbilical transverse incision compared with a periumbilical midline incision in reducing incisional hernia and improving short-term outcomes after laparoscopic colon cancer surgery.

methodsThis multicentre, open-label, randomized clinical trial was conducted at four high-volume hospitals in Korea, between April 2021 and February 2023. Patients were eligible if they were aged ≥ 20 years and had pathologically confirmed colon cancer. Block randomization was undertaken in a 1 : 1 ratio to transverse versus midline groups, stratified by tumour location. The primary endpoint was the incidence of radiological incisional hernia at 12 months after surgery. The secondary endpoints included symptomatic incisional hernia and short-term outcomes such as outcomes during surgery, complications at 30 days after surgery, pain after surgery, hospital stay after surgery, and patient-reported questionnaires.

resultsOf 174 enrolled patients, 155 were analysed for primary outcome (79 in transverse group and 76 in midline group). Radiological incisional hernia was significantly less frequent in the transverse group (6%) compared with the midline group (18%) 12 months after surgery (P = 0.022); however, there was no significant difference in the incidence of symptomatic incisional hernia between the two groups (3 versus 8%; P = 0.162). Surgical outcomes, complications after surgery, pain, and length of hospital stay did not differ significantly between the two groups. The transverse group had a shorter incision length (mean(standard deviation) 5.0(0.8) versus 5.3(0.8) cm; P = 0.027) and higher cosmesis score (18.0(3.2) versus 16.6(2.7); P = 0.006) than the midline group.

conclusionA periumbilical transverse incision significantly reduced radiological incisional hernia compared with a midline incision in laparoscopic colon cancer surgery. Clinical Research Information Service registration number: KCT0006082 (https://cris.nih.go.kr).

Indexed as

ColectomyColonic NeoplasmsIncisional HerniaLaparoscopyAgedFemaleHumansLength of StayMaleMiddle AgedPostoperative ComplicationsPostoperative PainRepublic of KoreaTreatment OutcomeUmbilicus

Identifiers

PMID40459070
PMCPMC12131159

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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.