Related Experiment Video
Updated: May 22, 2026

Roux-en-Y Gastric Bypass Operation in Rats
Published on: June 11, 2012
Marginal ulcer after Roux-en-Y gastric bypass: what have we really learned?
K El-Hayek1, P Timratana, H Shimizu
1Bariatric and Metabolic Institute, Cleveland Clinic, M61, 9500 Euclid Avenue, Cleveland, OH 44195, USA. elhayek@ccf.org
Marginal ulcers are common after Roux-en-Y gastric bypass (RYGB), with pain and dysphagia being key symptoms. Tobacco use is the only significant risk factor for recurrence, highlighting the need for cessation.
Area of Science:
- Bariatric Surgery
- Gastroenterology
- Surgical Complications
Background:
- The definition and diagnosis of marginal ulcers following Roux-en-Y gastric bypass (RYGB) lack consensus.
- Symptomatic patients undergoing upper endoscopy at a specialized bariatric center were evaluated.
- The study investigated presenting symptoms, causes, and treatment effectiveness for marginal ulcers.
Purpose of the Study:
- To define and characterize marginal ulcers after RYGB.
- To identify common symptoms, etiologies, and risk factors associated with marginal ulcers.
- To assess treatment efficacy and recurrence rates for marginal ulcers.
Main Methods:
- Retrospective review of upper gastrointestinal endoscopy findings in RYGB patients from June 2010 to August 2011.
- Analysis of a database from a quaternary bariatric referral center.
- Statistical analysis to identify risk factors for marginal ulcer development and recurrence.
Main Results:
- Marginal ulcers were diagnosed in 34% of 328 symptomatic patients.
- Common symptoms included pain, dysphagia, nausea, and vomiting.
- Tobacco use was the sole significant independent risk factor for ulcer recurrence (p=0.01).
Conclusions:
- Upper endoscopy is recommended for symptomatic RYGB patients due to high abnormality detection rates.
- Potential etiologies like tobacco, alcohol, and NSAID use require investigation and elimination.
- Tobacco use is a critical factor influencing ulcer persistence and recurrence after RYGB.
Related Concept Videos
Peptic Ulcer Disease V: Surgical Management and Nursing Care
Surgical Interventions for Peptic Ulcer Disease
Peptic Ulcer Disease III: Clinical Manifestations and Complications
Peptic Ulcer Disease II: Pathophysiology
Peptic Ulcer Disease II: Pathophysiology
Damaging agents such as Helicobacter pylori, gastric acid, pepsin, and nonsteroidal anti-inflammatory drugs (NSAIDs) can weaken the mucosal defense, allowing hydrogen ions to infiltrate back and harm epithelial cells.
Gastritis II: Pathophysiology
Inflammatory Bowel Disease V: Surgical Management
Here are some common surgical interventions for IBD:

