Evidence map›Paper›PMID 38271272›Full record

ArticleBJS open2024

Lymph node examination and survival in resected pancreatic ductal adenocarcinoma: retrospective study.

Ruediger Goess, Carsten Jäger, Julie Perinel, Ilaria Pergolini, Elke Demir, Okan Safak, Florian Scheufele, Stephan Schorn, Alexander Muckenhuber, Mustapha Adham and 4 more

Open access · goldAbstract read
In one paragraph

Article in BJS open, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed, 1 pooled it
2.0field-weighted citation impact, top 12% 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

9 citing papers in PubMed, 1 synthesis or guideline pooled it, 7 citations in OpenAlex.

  1. Pooled it
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  7. Observational
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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

14 authors at 3 institutions in 3 countries.

Ruediger GoessDepartment of Surgery, Klinikum rechts der Isar, Technical University of Munich, School of Medicine, Munich, Germany.ORCID 0000-0002-0407-0394
Carsten JägerDepartment of Surgery, Klinikum rechts der Isar, Technical University of Munich, School of Medicine, Munich, Germany.
Julie PerinelDepartment of Digestive Surgery, E. Herriot Hospital, Hospices civils de Lyon, Lyon, France.
Ilaria PergoliniDepartment of Surgery, Klinikum rechts der Isar, Technical University of Munich, School of Medicine, Munich, Germany.
Elke DemirDepartment of Surgery, Klinikum rechts der Isar, Technical University of Munich, School of Medicine, Munich, Germany.
Okan SafakDepartment of Surgery, Klinikum rechts der Isar, Technical University of Munich, School of Medicine, Munich, Germany.
Florian ScheufeleDepartment of Surgery, Klinikum rechts der Isar, Technical University of Munich, School of Medicine, Munich, Germany.ORCID 0000-0002-7105-0895
Stephan SchornDepartment of Surgery, Klinikum rechts der Isar, Technical University of Munich, School of Medicine, Munich, Germany.ORCID 0000-0002-6811-1220
Alexander MuckenhuberInstitute of Pathology, Klinikum rechts der Isar, Technical University of Munich, School of Medicine, Munich, Germany.
Mustapha AdhamDepartment of Digestive Surgery, E. Herriot Hospital, Hospices civils de Lyon, Lyon, France.
Alexander NovotnyDepartment of Surgery, Klinikum rechts der Isar, Technical University of Munich, School of Medicine, Munich, Germany.
Güralp O CeyhanDepartment of General Surgery, HPB-Unit, School of Medicine, Acibadem Mehmet Ali Aydinlar University, Istanbul, Turkey.
Helmut FriessDepartment of Surgery, Klinikum rechts der Isar, Technical University of Munich, School of Medicine, Munich, Germany.
Ihsan Ekin DemirDepartment of Surgery, Klinikum rechts der Isar, Technical University of Munich, School of Medicine, Munich, Germany.
TUM Klinikum · DEHospices Civils de Lyon · FRKent Hastanesi · TR

Funding

Else Kröner Clinician Scientist Professorship ProgrammeFaculty of Medicine of the Tecnical University of Munich
6 · The paper itself

Abstract

backgroundThe minimum number of examined lymph nodes (ELN) required for adequate staging and best prediction of survival has not been established in pancreatic ductal adenocarcinoma (PDAC). The aim of the study was to investigate the influence of ELN on staging and survival in PDAC.

methodsPatients undergoing partial or total pancreatectomy for PDAC at two European university hospitals between 2007 and 2018 were retrospectively reviewed. Multivariate Cox regression model and survival analyses were performed to verify adequate staging.

resultsOverall 341 (73 per cent) patients showed lymph node metastasis (N1/N2), whereas 125 (27 per cent) patients had no lymph node involvement (N0). With increasing number of ELN, the proportion of positive lymph nodes increased. The minimum number of ELN needed to detect lymph node involvement was 21. In multivariate analysis, examination of <21 lymph nodes was a significant negative predictor for survival. Examination of ≥21 ELN reversed this effect and ruled out possible misclassification.

conclusionThe number of ELN affects survival in PDAC. Possible misclassification was identified when <21 lymph nodes were examined. Therefore, at least 21 lymph nodes must be examined to avoid false lymph node classification in all types of resection.

Indexed as

AdenocarcinomaCarcinoma, Pancreatic DuctalPancreatic NeoplasmsHumansLymph NodesNeoplasm StagingPrognosisRetrospective Studies

Identifiers

PMID38271272
PMCPMC10810280
OpenAlexW4391232467

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

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.