Evidence map›Paper›PMID 31996214›Full record

ArticleWorld journal of surgical oncology2020

How does lymph node yield affect survival outcomes of stage I and II colon cancer?

Chi Chung Foo, Clement Ku, Rockson Wei, Jeremy Yip, Julian Tsang, Toi Yin Chan, Oswens Lo, Wai Lun Law

Abstract read
In one paragraph

Article in World journal of surgical oncology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 2 pooled it
–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

22 citing papers in PubMed, 2 syntheses or guidelines pooled it.

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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

8 authors.

Chi Chung FooDepartment of Surgery, University of Hong Kong, Hong Kong, China. ccfoo@hku.hk.ORCID http://orcid.org/0000-0001-8849-6597
Clement KuDepartment of Surgery, University of Hong Kong, Hong Kong, China.
Rockson WeiDepartment of Surgery, Queen Mary Hospital, Hong Kong, China.
Jeremy YipDepartment of Surgery, Queen Mary Hospital, Hong Kong, China.
Julian TsangDepartment of Surgery, Queen Mary Hospital, Hong Kong, China.
Toi Yin ChanDepartment of Surgery, Queen Mary Hospital, Hong Kong, China.
Oswens LoDepartment of Surgery, Queen Mary Hospital, Hong Kong, China.
Wai Lun LawDepartment of Surgery, University of Hong Kong, Hong Kong, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAccording to the American Joint Committee on Cancer staging for cancer of the colon, a minimum of 12 lymph nodes (LN) has to be sampled for accurate staging. This has bearing on the long-term prognosis and the need for adjuvant chemotherapy. The aim of this study was to revisit the association of lymph node yield and the long-term survival in patients with stages I and II, i.e. node-negative, colon cancer.

methodConsecutive patients who underwent elective or emergency curative resections for cancer of colon between the years 2003 and 2012 were retrospectively reviewed. Only patients with stage I or II diseases (AJCC 8th edition) were included. They were analysed in three groups, LN<12, LN12-19 and LN≥20. Their clinic-pathological characteristics were compared. The disease-free (DFS) and overall survival (OS) were estimated with the Kaplan-Meier method and compared with the log-rank test.

resultsThere was a total of 659 patients included in the analysis. Twelve or more LN were found in 65.6% of the specimens. The mean follow-up was 83.9 months. LN≥20 had significantly better DFS (p = 0.015) and OS (p = 0.036), whereas LN<12 had similar DFS and OS when compared to LN12-19. The advantage in DFS and OS were mainly seen in those with stage II diseases. A lymph node yield of greater than 20 was one of the predictors of favourable DFS, hazard ratio 0.358; 95% CI 0.170-.756, p = 0.007.

conclusionThe lymph node yield had a significant association with survival outcomes. A lymph node yield of 20 or more was associated with better survival outcomes. On the other hand, lymph node yield less than 12 was not shown to have inferior survival outcomes when compared to those between 12 and 19.

Indexed as

AgedColonic NeoplasmsFemaleFollow-Up StudiesHumansLymph Node ExcisionLymph NodesMaleNeoplasm StagingRetrospective StudiesSurvival RateColon cancerLymph nodeSurvival

Identifiers

PMID31996214
PMCPMC6990535

What Socratic holds

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LicenceCC BY
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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 Socratic graph.