Evidence map›Paper›PMID 32051917›Full record

ArticleVideoGIE : an official video journal of the American Society for Gastrointestinal Endoscopy2020

Double-tunneling butterfly method for endoscopic submucosal dissection of extensive rectal neoplasms.

Ioannis Stasinos, Takashi Toyonaga, Noriko Suzuki

Open access · goldAbstract read
In one paragraph

Article in VideoGIE : an official video journal of the American Society for Gastrointestinal Endoscopy, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
0.8field-weighted citation impact, top 25% of its field
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

7 citing papers in PubMed, 16 citations in OpenAlex.

  1. Article
  2. Endoscopic resection of colitis-associated neoplasia: A scoping review.World journal of gastrointestinal endoscopy · 2025
    Article
  3. Article
  4. Article
  5. GI endoscopic submucosal dissection using a calibrated, small-caliber-tip, transparent hood for lesions with fibrosis.VideoGIE : an official video journal of the American Society for Gastrointestinal Endoscopy · 2021
    Article
  6. Colorectal Endoscopic Submucosal Dissection: An Update on Best Practice.Clinical and experimental gastroenterology · 2021
    Review
  7. 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

3 authors at 2 institutions in 2 countries.

Ioannis StasinosThe Wolfson Unit for Endoscopy, St Mark's Hospital, London, United Kingdom.
Takashi ToyonagaDepartment of Endoscopy, Kobe University Hospital, Kobe, Japan.
Noriko SuzukiThe Wolfson Unit for Endoscopy, St Mark's Hospital, London, United Kingdom.
St Mark's Hospital · GBKobe University Hospital · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

BACKGROUND AND

aimsEndoscopic submucosal dissection (ESD) is the preferred technique for en bloc resection of superficial colorectal neoplasms. Resection of extensive lesions with ESD can be challenging, owing to loss of orientation in the submucosal space. In this case series, we describe the double-tunneling (DoT) butterfly method for ESD of extensive rectal neoplasms.

methodsThe key feature of the DoT butterfly method is the creation of 2 tunnels that are transformed into bilateral flaps, leaving a submucosal septum between them.

resultsFour rectal neoplasms measuring (maximum diameter) 7 cm, 8 cm, 9 cm, and 18 cm, respectively, were resected in 4 patients by use of the DoT butterfly method. The lesions included recurrent adenoma (n = 1) and dysplasia (n = 1) in longstanding ulcerative colitis. Curative R0 resection was confirmed in all 4 cases. Histologic examination showed tubular adenomas with low-grade dysplasia in 1 of 4 patients and focal high-grade dysplasia in 3 of 4 patients. One patient experienced postprocedural bleeding that required endoscopic reintervention.

conclusionThe DoT butterfly method appears to be useful for the resection of extensive rectal neoplasms. A prospective study is required to assess whether these results can be reproduced in a large cohort of patients.

Indexed as

DoT, double-tunnelingESD, endoscopic submucosal dissectionLST-G, LST granular typeLST, laterally spreading tumorNICE, narrow-band imaging, International Colorectal Endoscopic classification

Identifiers

PMID32051917
PMCPMC7004922
OpenAlexW3003579334

What OpenQuestion holds

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LicenceCC BY-NC-ND
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.