Evidence map›Paper›PMID 36029031›Full record

ArticleBJS open2022

Demographic trends in the incidence of malignant appendiceal tumours in England between 1995 and 2016: Population-based analysis.

Philippa Orchard, Ryan Preece, Michael G Thomas, Steven W Dixon, Newton A C S Wong, Adam C Chambers, David E Messenger

Open access · goldAbstract read
In one paragraph

Article in BJS open, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 2 pooled it
6.1field-weighted citation impact, top 3% 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

20 citing papers in PubMed, 2 syntheses or guidelines pooled it, 31 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Epidemiology and histopathological spectrum of appendiceal pathologies in 40.286 adults: a multicenter study from Turkey (2017-2025).European journal of trauma and emergency surgery : official publication of the European Trauma Society · 2026
    Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Observational
  10. Article
  11. Incidence of Malignancy in Appendicectomy Specimens.Asian Pacific journal of cancer prevention : APJCP · 2025
    Article
  12. Article
  13. Article
  14. Review
  15. Article
  16. High Incidence of Appendiceal Neoplasms in the Elderly: A Critical Concern for Non-Surgical Treatment.Medical principles and practice : international journal of the Kuwait University, Health Science Centre · 2023
    Article
  17. Neuroendocrine tumors of the appendix: a comprehensive review of the literature and case presentation.Romanian journal of morphology and embryology = Revue roumaine de morphologie et embryologie
    Review
  18. Review
  19. Review
  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

7 authors at 3 institutions in 1 country.

Philippa OrchardUniversity Hospitals Bristol and Weston NHS Foundation Trust, Bristol, UK.
Ryan PreeceUniversity Hospitals Bristol and Weston NHS Foundation Trust, Bristol, UK.ORCID 0000-0002-1718-6142
Michael G ThomasUniversity Hospitals Bristol and Weston NHS Foundation Trust, Bristol, UK.
Steven W DixonSchool of Cellular and Molecular Medicine, University of Bristol, Bristol, UK.
Newton A C S WongDepartment of Cellular Pathology, North Bristol NHS Trust, Southmead Hospital, Bristol, UK.
Adam C ChambersSchool of Cellular and Molecular Medicine, University of Bristol, Bristol, UK.
David E MessengerUniversity Hospitals Bristol and Weston NHS Foundation Trust, Bristol, UK.
University Hospitals Bristol NHS Foundation Trust · GBUniversity of Bristol · GBNorth Bristol NHS Trust · GB

Funding

Medical Research Council MR/N001494/1
6 · The paper itself

Abstract

aimsRecent data suggest that the incidence of malignant appendiceal tumours is increasing. This study aimed to determine temporal trends in the incidence of malignant appendiceal tumours within England and a possible influence by demographic factors.

methodsAll incident cases of appendiceal tumours in patients aged 20 years and above were identified from the National Cancer Registration and Analysis Service database between 1995 and 2016 using ICD-9/10 codes. Cancers were categorized according to histology. Joinpoint regression analysis was used to investigate changes in age-standardized incidence rates by age, sex, histological subtype and index of multiple deprivation quintiles, based on socioeconomic domains (income, employment, education, health, crime, barriers to housing and services and living environment). Average annual per cent changes (AAPCs) were estimated by performing Monte-Carlo permutation analysis.

resultsA total of 7333 tumours were diagnosed and 7056 patients were analysed, comprising 3850 (54.6 per cent) neuroendocrine tumours (NETs), 1892 (26.8 per cent) mucinous adenocarcinomas and 1314 (18.6 per cent) adenocarcinoma (not otherwise specified). The overall incidence of appendiceal tumours increased from 0.3 per 100 000 to 1.6 per 100 000 over the study interval. Incidence rate increases of comparable magnitude were observed across all age groups, but the AAPC was highest among patients aged 20-29 years (15.6 per cent, 95 per cent c.i 12.7-18.6 per cent) and 30-39 years (14.2 per cent, 12.2-16.2 per cent) and lowest among those aged 70-79 years (6.8 per cent, 5.7-8.0 per cent). Similar incidence rate increases were reported across all socioeconomic deprivation quintiles and in both sexes. Analysis by grade of NET showed that grade 1 tumours accounted for 63 per cent between 2010 and 2013, compared with 2 per cent between 2000 and 2003.

conclusionsThe incidence rate of malignant appendiceal tumours has increased significantly since 1995 and is mainly attributed to an increase in NETs. The increased diagnosis of low-grade NETs may in part be due to changes in pathological classification systems.

Indexed as

AdenocarcinomaAppendiceal NeoplasmsNeuroendocrine TumorsEnglandFemaleHumansIncidenceMale

Identifiers

PMID36029031
PMCPMC9418812
OpenAlexW4293777772

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.