Evidence map›Paper›PMID 33641214›Full record

ArticleLiver international : official journal of the International Association for the Study of the Liver2021

Nationwide treatment and outcomes of perihilar cholangiocarcinoma.

Anne-Marleen van Keulen, Stijn Franssen, Lydia G van der Geest, Marieke T de Boer, Minneke Coenraad, Lydi M J W van Driel, Joris I Erdmann, Nadia Haj Mohammad, Lara Heij, Heinz-Josef Klümpen and 6 more

Open access · hybridAbstract read
In one paragraph

Article in Liver international : official journal of the International Association for the Study of the Liver, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
44citing papers in PubMed, 1 pooled it
8.8field-weighted citation impact, top 1% 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

44 citing papers in PubMed, 1 synthesis or guideline pooled it, 67 citations in OpenAlex.

  1. Pooled it
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  3. Article
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  5. Article
  6. Outcomes of Liver Transplant Versus Partial Hepatectomy for Perihilar Cholangiocarcinoma Patients Requiring Arterial Reconstruction.Liver international : official journal of the International Association for the Study of the Liver · 2026
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  9. Observational
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  18. Review
  19. Cholangiocarcinoma in Denmark: Time-trends in incidence and mortality.JHEP reports : innovation in hepatology · 2025
    Article
  20. Review
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

16 authors at 11 institutions in 2 countries.

Anne-Marleen van KeulenDepartment of Surgery, Erasmus MC Cancer Institute, Rotterdam, the Netherlands.
Stijn FranssenDepartment of Surgery, Erasmus MC Cancer Institute, Rotterdam, the Netherlands.
Lydia G van der GeestDepartment of Research, Netherlands Comprehensive Cancer Organization (IKNL), Utrecht, the Netherlands.
Marieke T de BoerDepartment of Surgery, University Medical Center Groningen, Groningen, the Netherlands.
Minneke CoenraadDepartment of Gastroenterology and Hepatology, Leiden University Medical Center, Leiden, the Netherlands.
Lydi M J W van DrielDepartment of Gastroenterology, Erasmus Medical Center, Rotterdam, the Netherlands.
Joris I ErdmannDepartment of Surgery, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, the Netherlands.
Nadia Haj MohammadDepartment of Medical Oncology, University Medical Center Utrecht/ Regional Academic Cancer Center Utrecht, Utrecht University, Utrecht, the Netherlands.
Lara HeijInstitute of Pathology, University Hospital RWTH Aachen, Aachen, Germany.
Heinz-Josef KlümpenDepartment of Medical Oncology, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, the Netherlands.
Eric TjwaDepartment of Gastroenterology, Radboud University Medical Center, Nijmegen, the Netherlands.
Liselot Valkenburg-van IerselDepartment of Internal Medicine, Division of Medical Oncology, GROW-School for Oncology and Developmental Biology, Maastricht University Medical Center, Maastricht, the Netherlands.
Joanne VerheijDepartment of Pathology, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, the Netherlands.
Bas Groot KoerkampDepartment of Surgery, Erasmus MC Cancer Institute, Rotterdam, the Netherlands.ORCID 0000-0003-1917-6973
Pim B OlthofDepartment of Surgery, Erasmus MC Cancer Institute, Rotterdam, the Netherlands.ORCID 0000-0002-1691-1808
Dutch Hepatocellular & Cholangiocarcinoma Group (DHCG)
Amsterdam University Medical Centers · NLErasmus MC Cancer Institute · NLErasmus MC · NLLeiden University Medical Center · NLMaastricht University · NLMaastricht University Medical Centre · NLNetherlands Comprehensive Cancer Organisation · NLRadboud University Nijmegen · NLReinier de Graaf Hospital · NLUniversity Medical Center Groningen · NLUtrecht University · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPerihilar cholangiocarcinoma (pCCA) is a rare tumour that requires complex multidisciplinary management. All known data are almost exclusively derived from expert centres. This study aimed to analyse the outcomes of patients with pCCA in a nationwide cohort.

methodsData on all patients diagnosed with pCCA in the Netherlands between 2010 and 2018 were obtained from the Netherlands Cancer Registry. Data included type of hospital of diagnosis and the received treatment. Outcomes included the type of treatment and overall survival.

resultsA total of 2031 patients were included and the median overall survival for the overall cohort was 5.2 (95% CI 4.7-5.7) months. Three-hundred-ten (15%) patients underwent surgical resection, 271 (13%) underwent palliative systemic treatment, 21 (1%) palliative local anti-cancer treatment and 1429 (70%) underwent best supportive care. These treatments resulted in a median overall survival of 29.6 (95% CI 25.2-34.0), 12.2 (95% CI 11.0-13.3), 14.5 (95%CI 8.2-20.8) and 2.9 (95% CI 2.6-3.2) months respectively. Resection rate was 13% in patients who were diagnosed in non-academic and 32% in academic centres (P < .001), which resulted in a survival difference in favour of academic centres. Median overall survival was 9.7 (95% CI 7.7-11.7) months in academic centres compared to 4.9 (95% CI 4.3-5.4) months in non-academic centres (P < .001).

conclusionsIn patients with pCCA, resection rate and overall survival were higher for patients who were diagnosed in academic centres. These results show population-based outcomes of pCCA and highlight the importance of regional collaboration in the treatment of these patients.

Indexed as

Bile Duct NeoplasmsCholangiocarcinomaKlatskin TumorHumansNetherlandsTreatment Outcomecholangiocarcinomaklatskin tumourtreatment outcome

Identifiers

PMID33641214
PMCPMC8359996
OpenAlexW3134633054

What OpenQuestion holds

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LicenceCC BY-NC
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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.