Evidence map›Paper›PMID 34156546›Full record

SynthesisInternational journal of colorectal disease2021

Colorectal neoplasms in melanosis coli: a survey in Japan and a worldwide meta-analysis.

Ryo Katsumata, Noriaki Manabe, Minoru Fujita, Maki Ayaki, Aya Sunago, Tomoari Kamada, Yasumasa Monobe, Hirofumi Kawamoto, Ken Haruma

Abstract readMeta-Analysis
PubMed Publisher
In one paragraph

Synthesis in International journal of colorectal disease, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
0.9field-weighted citation impact, top 23% 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

8 citing papers in PubMed, 10 citations in OpenAlex.

  1. Review
  2. Review
  3. Article
  4. Article
  5. Review
  6. Article
  7. Article
  8. 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

9 authors at 1 institution in 1 country.

Ryo KatsumataDepartment of Clinical Pathology and Laboratory Medicine, Kawasaki Medical School General Medical Center, 2-6-1 Nakasange Kita-ku, Okayama City, Okayama, 7008505, Japan.ORCID http://orcid.org/0000-0002-9602-3391
Noriaki ManabeDepartment of Clinical Pathology and Laboratory Medicine, Kawasaki Medical School General Medical Center, 2-6-1 Nakasange Kita-ku, Okayama City, Okayama, 7008505, Japan. n_manabe@med.kawasaki-m.ac.jp.ORCID http://orcid.org/0000-0002-5010-3708
Minoru FujitaDepartment of Clinical Pathology and Laboratory Medicine, Kawasaki Medical School General Medical Center, 2-6-1 Nakasange Kita-ku, Okayama City, Okayama, 7008505, Japan.ORCID http://orcid.org/0000-0002-3211-995X
Maki AyakiDepartment of Clinical Pathology and Laboratory Medicine, Kawasaki Medical School General Medical Center, 2-6-1 Nakasange Kita-ku, Okayama City, Okayama, 7008505, Japan.ORCID http://orcid.org/0000-0002-1336-2663
Aya SunagoDepartment of Health Care Medicine, Kawasaki Medical School General Medical Center, Okayama, Japan.
Tomoari KamadaDepartment of Health Care Medicine, Kawasaki Medical School General Medical Center, Okayama, Japan.ORCID http://orcid.org/0000-0001-6195-2513
Yasumasa MonobeDepartment of Pathology, Kawasaki Medical School General Medical Center, Okayama, Japan.
Hirofumi KawamotoDepartment of General Internal Medicine 2, Kawasaki Medical School General Medical Center, Okayama, Japan.ORCID http://orcid.org/0000-0002-9650-3555
Ken HarumaDepartment of General Internal Medicine 2, Kawasaki Medical School General Medical Center, Okayama, Japan.ORCID http://orcid.org/0000-0002-2188-0401
Kawasaki Medical School · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThe association between melanosis coli (MC) and colorectal neoplasms remains unclear. Thus, we primarily aimed to clarify the epidemiology of MC in the Japanese population, identify the relationship between the use of anthranoids and MC, and determine the prevalence of detected intestinal lesions in patients with MC. We subsequently conducted a meta-analysis of published data, including our results, to summarize the influence of MC on the prevalence of colonic neoplasms.

methodsWe conducted a retrospective survey in Japan to investigate the effects of MC on intestinal disorders. The prevalence of colorectal neoplasms and ileal ulcers was evaluated by colonoscopy, and the clinical characteristics of the participants were investigated using an electronic database. Odds ratios for colorectal neoplasms were calculated. We also performed a meta-analysis using Review Manager to reveal the comprehensive relationship between MC and colorectal neoplasms.

resultsWe enrolled 690 Japanese participants in the primary study. The prevalence of regular anthranoid use was significantly higher in the MC group than in the control group (50.9% vs. 6.5%, p < 0.01). Hyperplastic/inflammatory polyps and adenomas were more frequently detected in the MC group than in the control group. In a meta-analysis of five studies, a significantly higher prevalence of hyperplastic/inflammatory polyps and adenomas was reported in the MC group than in the control group, while the incidence of adenocarcinoma was not significantly different between the two groups.

conclusionAlthough hyperplastic polyps and adenomas were more frequently detected in MC patients, MC was not associated with an elevated risk of colorectal cancer.

Indexed as

Colonic PolypsColorectal NeoplasmsMelanosisHumansJapanRetrospective StudiesAdenomaAnthraquinonesColonoscopyColorectal neoplasms

Identifiers

PMID34156546
OpenAlexW3174813018

What OpenQuestion holds

Textmetadata
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.