Hemorrhoids as a risk factor for colorectal adenomas on colonoscopy

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Abstract: Background and study aims Colorectal premalignant polyps and hemorrhoids are important findings in colonoscopy; however, the association between them is unclear. Therefore, we investigated the association between the presence and severity of hemorrhoids and the detection of precancerous colorectal polyps on colonoscopy. Patients and methods This retrospective, single-center, cross-sectional study enrolled patients who underwent colonoscopy at Toyoshima Endoscopy Clinic between May 2017 and October 2020. The association between hemorrhoids and other outcomes (patient age, sex, withdrawal time for colonoscopy, expert endoscopist, number of adenomas per colonoscopy, detection rates of adenoma, advanced neoplasia, clinically significant serrated polyp, and sessile serrated lesion) was assessed using a binomial logistic regression model. Results A total of 12,408 patients were enrolled in this study. Hemorrhoids were identified in 1,863 patients. Univariable analysis showed that patients with hemorrhoids were older (61.0 vs. 52.5 years, P < 0.001), had a higher number of adenomas per colonoscopy (1.16 vs. 0.756, P < 0.001) than those without hemorrhoids. Multivariable analyses also demonstrated that hemorrhoids were associated with a higher number of adenomas per colonoscopy (odds ratio [OR]: 1.061; P = 0.002), regardless of patient age, sex, and expert endoscopist. Among patients with hemorrhoids, severe hemorrhoids with a mucosal elevation ≥ 10 mm were associated with a higher number of adenomas per colonoscopy than mild hemorrhoids (OR: 1.112, P = 0.044), regardless of patient age, sex, and expert endoscopist. Conclusions Hemorrhoids, especially severe ones, are associated with a high number of adenomas. Complete colonoscopy should be performed in patients with hemorrhoids.

Standort
Deutsche Nationalbibliothek Frankfurt am Main
Umfang
Online-Ressource
Sprache
Englisch

Erschienen in
Hemorrhoids as a risk factor for colorectal adenomas on colonoscopy ; volume:11 ; number:05 ; year:2023 ; pages:E497-E503
Endoscopy International Open ; 11, Heft 05 (2023), E497-E503

Beteiligte Personen und Organisationen
Toyoshima, Osamu
Nishizawa, Toshihiro
Yoshida, Shuntaro
Matsuno, Tatsuya
Miyoshi, Kotaro
Naito, Eri
Shiomi, Chihiro
Uozumi, Takeshi
Fujishiro, Mitsuhiro
Saito, Yutaka

DOI
10.1055/a-2062-9443
URN
urn:nbn:de:101:1-2023062913421855352816
Rechteinformation
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
Letzte Aktualisierung
14.08.2025, 10:49 MESZ

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Beteiligte

  • Toyoshima, Osamu
  • Nishizawa, Toshihiro
  • Yoshida, Shuntaro
  • Matsuno, Tatsuya
  • Miyoshi, Kotaro
  • Naito, Eri
  • Shiomi, Chihiro
  • Uozumi, Takeshi
  • Fujishiro, Mitsuhiro
  • Saito, Yutaka

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