Evidence map›Paper›PMID 30734020›Full record

Observational studyBJS open2019

Role of lymph node yield and lymph node ratio in predicting outcomes in non-metastatic colorectal cancer.

C H A Lee, S Wilkins, K Oliva, M P Staples, P J McMurrick

Abstract readMulticenter StudyObservational Study
In one paragraph

Observational study in BJS open, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed, 3 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

36 citing papers in PubMed, 3 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

5 authors.

C H A LeeCabrini Monash University Department of Surgery Cabrini Hospital Malvern Victoria Australia.
S WilkinsCabrini Monash University Department of Surgery Cabrini Hospital Malvern Victoria Australia.ORCID 0000-0001-7712-4114
K OlivaCabrini Monash University Department of Surgery Cabrini Hospital Malvern Victoria Australia.
M P StaplesCabrini Institute Cabrini Hospital Malvern Victoria Australia.
P J McMurrickCabrini Monash University Department of Surgery Cabrini Hospital Malvern Victoria Australia.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background: Lymph node yield (LNY) of 12 or more in resection of colorectal cancer is recommended in current international guidelines. Although a low LNY (less than 12) is associated with poorer outcome in some studies, its prognostic value is unclear in patients with early-stage colorectal or rectal cancer with a complete pathological response following neoadjuvant therapy. Lymph node ratio (LNR), which reflects the proportion of positive to total nodes obtained, may be more accurate in predicting outcome in stage III colorectal cancer. This study aimed to identify factors correlating with LNY and evaluate the prognostic role of LNY and LNR in colorectal cancer. Methods: An observational study was performed on patients with colorectal cancer treated at three hospitals in Melbourne, Australia, from January 2010 to March 2016. Association of LNY and LNR with clinical variables was analysed using linear regression. Disease-free (DFS) and overall (OS) survival were investigated with Cox regression and Kaplan-Meier survival analyses. Results: Some 1585 resections were analysed. Median follow-up was 27·1 (range 0·1-71) months. Median LNY was 16 (range 0-86), and was lower for rectal cancers, decreased with increasing age, and increased with increasing stage. High LNY (12 or more) was associated with better DFS in colorectal cancer. Subgroup analysis indicated that low LNY was associated with poorer DFS and OS in stage III colonic cancer, but had no effect on DFS and OS in rectal cancer (stages I-III). Higher LNR was predictive of poorer DFS and OS. Conclusion: Low LNY (less than 12) was predictive of poor DFS in stage III colonic cancer, but was not a factor for stage I or II colonic disease or any rectal cancer. LNR was a predictive factor in DFS and OS in stage III colonic cancer, but influenced DFS only in rectal cancer.

Indexed as

Lymph Node RatioAdultAgedAged, 80 and overColorectal NeoplasmsFemaleHumansKaplan-Meier EstimateLymphatic MetastasisLymph NodesMaleMiddle AgedNeoadjuvant TherapyNeoplasm StagingPrognosisTreatment Outcome

Identifiers

PMID30734020
PMCPMC6354193

What OpenQuestion holds

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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.