Evidence map›Paper›PMID 32871841›Full record

ArticleIn vivo (Athens, Greece)

Prognostic Utility of Apical Lymph Node Metastasis in Patients With Left-sided Colorectal Cancer.

Liming Wang, Yasumitsu Hirano, Gregory Heng, Toshimasa Ishii, Hiroka Kondo, Kiyoka Hara, Nao Obara, Masahiro Asari, Shigeki Yamaguchi

Open access · diamondAbstract read
In one paragraph

Article in In vivo (Athens, Greece). The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 1 pooled it
1.2field-weighted citation impact, top 19% 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

13 citing papers in PubMed, 1 synthesis or guideline pooled it, 21 citations in OpenAlex.

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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

9 authors at 1 institution in 1 country.

Liming WangDivision of Gastroenterological Surgery, Saitama Medical University International Medical Center, Hidaka, Japan wuminami@hotmail.com.
Yasumitsu HiranoDivision of Gastroenterological Surgery, Saitama Medical University International Medical Center, Hidaka, Japan.
Gregory HengDivision of Gastroenterological Surgery, Saitama Medical University International Medical Center, Hidaka, Japan.
Toshimasa IshiiDivision of Gastroenterological Surgery, Saitama Medical University International Medical Center, Hidaka, Japan.
Hiroka KondoDivision of Gastroenterological Surgery, Saitama Medical University International Medical Center, Hidaka, Japan.
Kiyoka HaraDivision of Gastroenterological Surgery, Saitama Medical University International Medical Center, Hidaka, Japan.
Nao ObaraDivision of Gastroenterological Surgery, Saitama Medical University International Medical Center, Hidaka, Japan.
Masahiro AsariDivision of Gastroenterological Surgery, Saitama Medical University International Medical Center, Hidaka, Japan.
Shigeki YamaguchiDivision of Gastroenterological Surgery, Saitama Medical University International Medical Center, Hidaka, Japan.
Saitama Medical University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundUnlike the tumor nodes metastasis (TNM) lymph node classification, based solely on counts of nodal metastases, the Japanese system of classifying colorectal carcinoma (CRC) focuses on regional lymph node spread. In this study, we explored the prognostic utility of inferior mesenteric artery (IMA) apical lymph node (APN) metastasis. PATIENTS AND

methodsThis was a retrospective study of patients with stage III left-sided CRC. All enrollees were subjected to D3 resection between April 2007 and December 2016 at the International Medical Center of Saitama Medical University and then stratified by histologic presence (APN+ group) or absence (APN- group) of tumor in APNs examined postoperatively. Ultimately, propensity score matching was invoked (1:2) and COX regression analysis was conducted, determining group rates of relapse-free survival (RFS) and cancer-specific survival (CSS).

resultsA total of 498 patients were studied, grouped as APN+ (19/498, 3.8%) or APN- (479/498, 96.2%). Prior to matching, the APN+ (vs. APN-) group showed significantly more lymphatic involvement (73.7% vs. 47.8%; p=0.023), deep (T3/T4) tumor infiltration (100% vs. 78.9%; p=0.024), and nodal metastasis (N2: 84.2% vs. 27.6%; p<0.001). In addition, para-aortic nodal recurrences were significantly increased (15.7% vs. 2.0%; p<0.001), conferring worse RFS (p<0.001) and CSS (p=0.014) rates. Once baseline factors were matched, the two groups appeared similar in RFS (p=0.415) and CSS (p=0.649). Multivariate regression analysis indicated that elevated carcinoembryonic antigen (CEA) level and deep tumor infiltration were independent risk factors for RFS, whereas postoperative complications and tumor-positive node counts were independent risk factors for CSS. APN+ status was not a significant risk factor for RFS or CSS.

conclusionAPN positivity may thus constitute a regional rather than systemic manifestation. The TNM staging based on the number of metastatic lymph nodes seems to be more reasonable than the regional lymph node classification method.

Indexed as

Colorectal NeoplasmsNeoplasm Recurrence, LocalHumansLymphatic MetastasisLymph Node ExcisionLymph NodesNeoplasm StagingPrognosisRetrospective StudiesApical lymph nodesleft-sided colorectal cancerpropensity score matching

Identifiers

PMID32871841
PMCPMC7652469
OpenAlexW3081906811

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.