Research Article

Endoscopic Bile Reflux and Associated Gastric Mucosal Findings: A Retrospective Observational Study

Volume: 16 Number: 3 September 22, 2026
TR EN

Endoscopic Bile Reflux and Associated Gastric Mucosal Findings: A Retrospective Observational Study

Abstract

Aim: This study aimed to evaluate the distribution of endoscopic bile reflux and accompanying gastric mucosal findings in a large patient cohort and to investigate their association with demographic and clinical variables.

Material and Methods: This retrospective, single-center study included 446 adult patients who underwent upper gastrointestinal endoscopy between January 2020 and December 2025. Endoscopic findings, including erythema, mucosal edema, bile reflux, hyperemia, and erosive changes, were recorded. Demographic and clinical variables, including age, sex, smoking status, and alcohol use, were analyzed. Associations were evaluated using univariate analyses and multivariable logistic regression.

Results: Erythema was the most frequently observed finding (70.0%), followed by mucosal edema (55.6%), hyperemia (49.6%), bile reflux (43.9%), and erosive changes (23.3%). Bile reflux and erosive changes were more frequently observed in older patients and in those with smoking. In multivariable analysis, age ≥50 years (OR: 1.62, 95% CI: 1.08–2.42, p=0.021) and smoking (OR: 1.58, 95% CI: 1.05–2.37, p=0.028) were associated with bile reflux. Multiple concurrent endoscopic findings were present in a substantial proportion of patients.

Conclusion: Endoscopic bile reflux and associated gastric mucosal abnormalities are common and exhibit variable associations with demographic and clinical factors. Given the non-specific nature of many endoscopic findings, their clinical interpretation should be made cautiously. Further prospective studies incorporating histopathological evaluation are needed to clarify their diagnostic and clinical relevance.

Keywords

Ethical Statement

This study was approved by the Düzce University Non-Interventional Clinical Research Ethics Committee with the approval number 2026/80 and date 23 March 2026. The requirement for informed consent was waived due to the retrospective design and use of anonymized data.

References

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Details

Primary Language

English

Subjects

Health Services and Systems (Other)

Journal Section

Research Article

Publication Date

September 22, 2026

Submission Date

April 7, 2026

Acceptance Date

June 29, 2026

Published in Issue

Year 2026 Volume: 16 Number: 3

APA
Yekenkurul, E., Kurnaz, E., Çetin, M. F., Gönüllü, M. E., Gürsoy, F., & Pehlivan, M. (2026). Endoscopic Bile Reflux and Associated Gastric Mucosal Findings: A Retrospective Observational Study. Value in Health Sciences, 16(3), 503-509. https://doi.org/10.33631/sabd.1925125
AMA
1.Yekenkurul E, Kurnaz E, Çetin MF, Gönüllü ME, Gürsoy F, Pehlivan M. Endoscopic Bile Reflux and Associated Gastric Mucosal Findings: A Retrospective Observational Study. VHS. 2026;16(3):503-509. doi:10.33631/sabd.1925125
Chicago
Yekenkurul, Erman, Eray Kurnaz, Mehmet Fuat Çetin, Mehmet Emin Gönüllü, Fatih Gürsoy, and Mevlüt Pehlivan. 2026. “Endoscopic Bile Reflux and Associated Gastric Mucosal Findings: A Retrospective Observational Study”. Value in Health Sciences 16 (3): 503-9. https://doi.org/10.33631/sabd.1925125.
EndNote
Yekenkurul E, Kurnaz E, Çetin MF, Gönüllü ME, Gürsoy F, Pehlivan M (September 1, 2026) Endoscopic Bile Reflux and Associated Gastric Mucosal Findings: A Retrospective Observational Study. Value in Health Sciences 16 3 503–509.
IEEE
[1]E. Yekenkurul, E. Kurnaz, M. F. Çetin, M. E. Gönüllü, F. Gürsoy, and M. Pehlivan, “Endoscopic Bile Reflux and Associated Gastric Mucosal Findings: A Retrospective Observational Study”, VHS, vol. 16, no. 3, pp. 503–509, Sept. 2026, doi: 10.33631/sabd.1925125.
ISNAD
Yekenkurul, Erman - Kurnaz, Eray - Çetin, Mehmet Fuat - Gönüllü, Mehmet Emin - Gürsoy, Fatih - Pehlivan, Mevlüt. “Endoscopic Bile Reflux and Associated Gastric Mucosal Findings: A Retrospective Observational Study”. Value in Health Sciences 16/3 (September 1, 2026): 503-509. https://doi.org/10.33631/sabd.1925125.
JAMA
1.Yekenkurul E, Kurnaz E, Çetin MF, Gönüllü ME, Gürsoy F, Pehlivan M. Endoscopic Bile Reflux and Associated Gastric Mucosal Findings: A Retrospective Observational Study. VHS. 2026;16:503–509.
MLA
Yekenkurul, Erman, et al. “Endoscopic Bile Reflux and Associated Gastric Mucosal Findings: A Retrospective Observational Study”. Value in Health Sciences, vol. 16, no. 3, Sept. 2026, pp. 503-9, doi:10.33631/sabd.1925125.
Vancouver
1.Erman Yekenkurul, Eray Kurnaz, Mehmet Fuat Çetin, Mehmet Emin Gönüllü, Fatih Gürsoy, Mevlüt Pehlivan. Endoscopic Bile Reflux and Associated Gastric Mucosal Findings: A Retrospective Observational Study. VHS. 2026 Sep. 1;16(3):503-9. doi:10.33631/sabd.1925125