Evidence map›Paper›PMID 34755008›Full record

ArticleAnnals of gastroenterological surgery2021

Is proximal gastrectomy indicated for locally advanced cancer in the upper third of the stomach?

Motonari Ri, Koshi Kumagai, Ken Namikawa, Shinichiro Atsumi, Masaru Hayami, Rie Makuuchi, Satoshi Ida, Manabu Ohashi, Takeshi Sano, Souya Nunobe

Open access · goldAbstract read
In one paragraph

Article in Annals of gastroenterological surgery, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
2.9field-weighted citation impact, top 8% 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

24 citing papers in PubMed, 34 citations in OpenAlex.

  1. Reflux and stenosis after minimally invasive proximal gastrectomy with double-flap technique: risk factors and impact of robotic surgery.Gastric cancer : official journal of the International Gastric Cancer Association and the Japanese Gastric Cancer Association · 2026
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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

10 authors at 1 institution in 1 country.

Motonari RiDepartment of Gastroenterological Surgery Cancer Institute Hospital Japanese Foundation for Cancer Research Tokyo Japan.ORCID https://orcid.org/0000-0001-8103-9721
Koshi KumagaiDepartment of Gastroenterological Surgery Cancer Institute Hospital Japanese Foundation for Cancer Research Tokyo Japan.
Ken NamikawaDepartment of Gastroenterology Cancer Institute Hospital Japanese Foundation for Cancer Research Tokyo Japan.
Shinichiro AtsumiDepartment of Gastroenterological Surgery Cancer Institute Hospital Japanese Foundation for Cancer Research Tokyo Japan.
Masaru HayamiDepartment of Gastroenterological Surgery Cancer Institute Hospital Japanese Foundation for Cancer Research Tokyo Japan.
Rie MakuuchiDepartment of Gastroenterological Surgery Cancer Institute Hospital Japanese Foundation for Cancer Research Tokyo Japan.
Satoshi IdaDepartment of Gastroenterological Surgery Cancer Institute Hospital Japanese Foundation for Cancer Research Tokyo Japan.
Manabu OhashiDepartment of Gastroenterological Surgery Cancer Institute Hospital Japanese Foundation for Cancer Research Tokyo Japan.ORCID https://orcid.org/0000-0001-7417-3682
Takeshi SanoDepartment of Gastroenterological Surgery Cancer Institute Hospital Japanese Foundation for Cancer Research Tokyo Japan.
Souya NunobeDepartment of Gastroenterological Surgery Cancer Institute Hospital Japanese Foundation for Cancer Research Tokyo Japan.ORCID https://orcid.org/0000-0003-3012-5632
Japanese Foundation For Cancer Research · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimTo treat upper third gastric cancer, proximal gastrectomy (PG), a function-preserving procedure, is recommended for early lesions when at least half the distal stomach can be preserved, while total gastrectomy (TG) is standard for locally advanced lesions. Oncological feasibility, when applying PG for such lesions, remains unknown.

methodsWe reviewed patients undergoing TG for clinical (c) T2-T4 upper third gastric cancer between 2006 and 2015. Preoperative tumor locations were further classified into the cardia, fornix, and gastric body based on endoscopic findings. The metastatic rate and therapeutic value index for lymph node (LN) dissection were determined, and characteristics of patients with distal LN (No. 4d, 5, and 6) metastasis (DLNM) were reviewed. In addition, patients with pathological tumor invasion to the middle third (M) region were investigated.

resultsWe studied 167 patients. There were 8 (4.8%) with DLNM and 41 (24.6%) with pathological tumor invasion to the M region. As to regional stations, therapeutic indices for LN dissection at stations No. 4d, 5, 6, and 12a were zero or extremely low. No DLNM was detected in cT2 lesions or cT3/T4 lesions located within the cardia and/or the fornix. In addition, none of the lesions located within the cardia and/or the fornix by preoperative endoscopy extended to the M region in the pathological specimen.

conclusionsFor upper third gastric cancer, PG without No. 12a dissection might be acceptable for cT2-T4 lesions located within the cardia and/or the fornix when considering the risk of DLNM and cancer-positivity in the distal stump.

Indexed as

distal marginlocally advanced gastric cancerlymph node metastasisproximal gastrectomytherapeutic indexupper third gastric cancer

Identifiers

PMID34755008
PMCPMC8560615
OpenAlexW3186486875

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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.