Evidence map›Paper›PMID 40052250›Full record

ArticleActa oncologica (Stockholm, Sweden)2025

Rising incidence trends of synchronous prostate and rectal cancers: a population-based study.

Elias Edfelt, Mehrnoosh Shahrivar, Karin Holmsten, Cecilia Radkiewicz

Abstract read
In one paragraph

Article in Acta oncologica (Stockholm, Sweden), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

4 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Article
  4. 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

4 authors.

Elias EdfeltUpper Gastrointestinal Surgery, Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden.
Mehrnoosh ShahrivarColorectal Surgery, Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden; Department of Surgery and Oncology, Capio Sankt Görans Hospital, Stockholm, Sweden. mehrnoosh.shahrivar@ki.se.
Karin HolmstenDepartment of Surgery and Oncology, Capio Sankt Görans Hospital, Stockholm, Sweden; Department of Oncology and Pathology, Karolinska Institutet, Stockholm, Sweden.
Cecilia RadkiewiczUpper Gastrointestinal Surgery, Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden; Department of Surgery and Oncology, Capio Sankt Görans Hospital, Stockholm, Sweden.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThere is a lack of comprehensive reports on time trends in synchronous prostate and rectal cancers. To address this, we conducted the largest cohort study to date to assess these trends in a population-based setting.

methodsWe included all adult (ages 18-99) men with incident prostate cancer in the Swedish Cancer Register in 1993-2019. Age-standardized incidence rates (ASIRs) of prostate cancer per 100,000 male population per year were calculated and compared to the ASIR of synchronous (± 6 months from rectal cancer diagnosis) prostate cancer. Age-adjusted synchronous-to-general incidence rate ratios (IRRs) were predicted using Poisson regression. As a sensitivity analysis to assess the effect of incidental findings due to the anatomical proximity, we investigated synchronous prostate and non-sigmoid colon cancers.

resultsAmong 238,252 prostate cancer cases, 594 were synchronous with rectal cancer. The incidence of synchronous prostate cancer increased over the study period, with mean ASIR rising from 418/100,000 (1993-2001) to 788/100,000 (year 2011-2019). The synchronous-to-general IRR increased from 1.92 (95% confidence interval (CI) 1.60-2.31) to 2.61 (95% CI 2.32-2.95) over the same periods. Prostate cancer was also more commonly diagnosed in conjunction with non-sigmoid colon cancer than in the overall male population, but no time trend was observed.

interpretationThe incidence of synchronous prostate and rectal cancers has increased over the past 20 years in Sweden, with no signs of plateauing. Future studies are warranted to explore factors contributing to prostate cancer overdiagnosis and to optimize clinical management strategies for this complex patient group.

Indexed as

Neoplasms, Multiple PrimaryProstatic NeoplasmsRectal NeoplasmsAdolescentAdultAgedAged, 80 and overHumansIncidenceMaleMiddle AgedRegistriesSwedenYoung Adult

Identifiers

PMID40052250
PMCPMC11905149

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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.