Evidence map›Paper›PMID 32720049›Full record

SynthesisAnnals of surgical oncology2021

Systematic Review and Metaanalysis of Lymph Node Metastases of Resected Pancreatic Neuroendocrine Tumors.

Masayuki Tanaka, Max Heckler, André L Mihaljevic, Pascal Probst, Ulla Klaiber, Ulrike Heger, Simon Schimmack, Markus W Büchler, Thilo Hackert

Registry-linked trialAbstract readMeta-AnalysisSystematic Review
PubMed Publisher
In one paragraph

Synthesis in Annals of surgical oncology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05907824 (Long-term Prognosis Comparison Between Parenchyma-sparing and Oncologic Resections for Non-functional Neuroendocrine Tumors of the Pancreatic Body and Tail ≤ 3cm), which is not on this map. Cited by 34 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed, 2 pooled it
6.7field-weighted citation impact, top 2% 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.

NCT05907824 unknown statusnot on this mapstarted 2023, after this paper: background citation

Long-term Prognosis Comparison Between Parenchyma-sparing and Oncologic Resections for Non-functional Neuroendocrine Tumors of the Pancreatic Body and Tail ≤ 3cm: a Real-world Data Study

TypeobservationalSponsorFudan UniversityRan2023 to 2023Enrolled800ConditionsNon Functioning Pancreatic Endocrine TumorArmsHistopathological review, long-term prognosis and quality of life follow-up
3 · Its place in the literature

Who cites it

34 citing papers in PubMed, 2 syntheses or guidelines pooled it, 62 citations in OpenAlex.

  1. Pooled it
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  6. Article
  7. Size alone is not enough: Ki-67 and invasion patterns identify high-risk pancreatic neuroendocrine tumors.Arquivos brasileiros de cirurgia digestiva : ABCD = Brazilian archives of digestive surgery · 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

9 authors at 1 institution in 2 countries.

Masayuki TanakaDepartment of General, Visceral and Transplantation Surgery, University of Heidelberg, Heidelberg, Germany.
Max HecklerDepartment of General, Visceral and Transplantation Surgery, University of Heidelberg, Heidelberg, Germany.
André L MihaljevicDepartment of General, Visceral and Transplantation Surgery, University of Heidelberg, Heidelberg, Germany.
Pascal ProbstDepartment of General, Visceral and Transplantation Surgery, University of Heidelberg, Heidelberg, Germany.
Ulla KlaiberDepartment of General, Visceral and Transplantation Surgery, University of Heidelberg, Heidelberg, Germany.
Ulrike HegerDepartment of General, Visceral and Transplantation Surgery, University of Heidelberg, Heidelberg, Germany.
Simon SchimmackDepartment of General, Visceral and Transplantation Surgery, University of Heidelberg, Heidelberg, Germany.
Markus W BüchlerDepartment of General, Visceral and Transplantation Surgery, University of Heidelberg, Heidelberg, Germany.
Thilo HackertDepartment of General, Visceral and Transplantation Surgery, University of Heidelberg, Heidelberg, Germany. thilo.hackert@med.uni-heidelberg.de.
Heidelberg University · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe optimal surgical strategy for pancreatic neuroendocrine tumors (PNETs) is unknown. However, current guidelines recommend a watch-and-wait strategy for small nonfunctional PNETs (NF-PNETs). The aim of this study is to investigate the risk stratification and prognostic significance of lymph node metastasis (LNM) of PNETs to guide decision-making for lymphadenectomy. PATIENTS AND

methodsThe MEDLINE and Web of Science databases were systematically searched for studies reporting either risk factors of LNM in resected PNETs or survival of patients with LNM. The weighted average incidence of LNM was calculated according to tumor characteristics. Random-effects metaanalyses were performed, and pooled hazard ratios (HR) and their 95% confidence intervals (CI) were calculated to determine the impact of LNM on overall survival (OS). In subgroup analyses, NF-PNETs were assessed.

resultsFrom a total of 5883 articles, 98 retrospective studies with 13,374 patients undergoing resection for PNET were included. In all PNETs, the weighted median rates of LNM were 11.5% for small (≤ 2 cm) PNETs and 15.8% for G1 PNETs. In NF-PNETs, the rates were 11.2% for small PNETs and 10.3% for G1 PNETs. LNM of all PNETs (HR 3.87, 95% CI 3.00-4.99, P < 0.001) and NF-PNETs (HR 4.98, 95% CI 2.81-8.83, P < 0.001) was associated with worse OS.

conclusionsLNM is potentially prevalent even in small and well-differentiated PNETs and is associated with worse prognosis. A watch-and-wait strategy for small NF-PNETs should be reappraised, and oncologic resection with lymphadenectomy can be considered. Prospective and controlled studies are needed in the future.

Indexed as

Neuroendocrine TumorsPancreatic NeoplasmsHumansLymphatic MetastasisProspective StudiesRetrospective Studies

Identifiers

PMID32720049
OpenAlexW3044476271

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

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.