Evidence map›Paper›PMID 31792717›Full record

ArticleAnnals of surgical oncology2020

The Impact of Primary Tumor Location in Synchronous Metastatic Colorectal Cancer: Differences in Metastatic Sites and Survival.

Nelleke P M Brouwer, Dave E W van der Kruijssen, Niek Hugen, Ignace H J T de Hingh, Iris D Nagtegaal, Rob H A Verhoeven, Miriam Koopman, Johannes H W de Wilt

Open access · hybridAbstract read
In one paragraph

Article in Annals of surgical oncology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers.

0numbers the graph read from it
0cells of the map it votes in
37citing papers in PubMed
2.8field-weighted citation impact, top 8% 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

37 citing papers in PubMed, 64 citations in OpenAlex.

  1. Trial
  2. Article
  3. Article
  4. Single-cell epigenomics of colorectal cancer.Experimental & molecular medicine · 2026
    Review
  5. Article
  6. Article
  7. Article
  8. Review
  9. Considerations for Care of the Cancer Patient.International anesthesiology clinics · 2025
    Article
  10. Article
  11. Article
  12. Review
  13. Effects of location of primary tumor on survival after pulmonary metastasectomy for colorectal cancer.Journal of gastrointestinal surgery : official journal of the Society for Surgery of the Alimentary Tract · 2025
    Article
  14. Impact of Liver and Primary Tumor Localization on Survival in Lung Metastasectomy for Colorectal Carcinoma.Annals of thoracic and cardiovascular surgery : official journal of the Association of Thoracic and Cardiovascular Surgeons of Asia · 2025
    Article
  15. Review
  16. Article
  17. Article
  18. Review
  19. Article
  20. Article
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 at 5 institutions in 1 country.

Nelleke P M BrouwerDepartment of Surgery, Radboud University Medical Center, Nijmegen, The Netherlands. nelleke.brouwer@radboudumc.nl.
Dave E W van der KruijssenDepartment of Medical Oncology, University Medical Center Utrecht, Utrecht, The Netherlands.
Niek HugenDepartment of Surgery, Radboud University Medical Center, Nijmegen, The Netherlands.
Ignace H J T de HinghDepartment of Surgery, Catharina Hospital Eindhoven, Eindhoven, The Netherlands.
Iris D NagtegaalDepartment of Pathology, Radboud University Medical Center, Nijmegen, The Netherlands.
Rob H A VerhoevenDepartment of Surgery, Radboud University Medical Center, Nijmegen, The Netherlands.
Miriam KoopmanDepartment of Medical Oncology, University Medical Center Utrecht, Utrecht, The Netherlands.
Johannes H W de WiltDepartment of Surgery, Radboud University Medical Center, Nijmegen, The Netherlands.
Radboud University Nijmegen · NLUniversity Medical Center Utrecht · NLCatharina Ziekenhuis · NLNetherlands Comprehensive Cancer Organisation · NLRadboud University Medical Center · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeWe explored differences in survival between primary tumor locations, hereby focusing on the role of metastatic sites in synchronous metastatic colorectal cancer (mCRC).

methodsData for patients diagnosed with synchronous mCRC between 1989 and 2014 were retrieved from the Netherlands Cancer registry. Relative survival and relative excess risks (RER) were analyzed by primary tumor location (right colon (RCC), left colon (LCC), and rectum). Metastatic sites were reported per primary tumor location. Survival was analyzed for metastatic sites combined and for single metastatic sites.

resultsIn total, 36,297 patients were included in this study. Metastatic sites differed significantly between primary tumor locations, with liver-only metastases in 43%, 54%, and 52% of RCC, LCC, and rectal cancer patients respectively (p < 0.001). Peritoneal metastases were most prevalent in RCC patients (33%), and lung metastases were most prevalent in rectal cancer patients (28%). Regardless of the location of metastases, patients with RCC had a worse survival compared with LCC (RER 0.81, 95% CI 0.78-0.83) and rectal cancer (RER 0.73, 95% CI 0.71-0.76). The survival disadvantage for RCC remained present, even in cases with metastasectomy for liver-only disease (LCC: RER 0.66, 95% CI 0.57-0.76; rectal cancer: RER 0.84, 95% CI 0.66-1.06).

conclusionsThis study showed significant differences in relative survival between primary tumor locations in synchronous mCRC, which can only be partially explained by distinct metastatic sites. Our findings support the concept that RCC, LCC and rectal cancer should be considered distinct entities in synchronous mCRC.

Indexed as

MetastasectomyAdultAgedAged, 80 and overColorectal NeoplasmsFemaleHumansLiver NeoplasmsLogistic ModelsLung NeoplasmsMaleMiddle AgedNetherlandsPeritoneal NeoplasmsPrognosisRegistries

Identifiers

PMID31792717
PMCPMC7138773
OpenAlexW2989899593

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

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 OpenQuestion graph.