Lessons learned from upper gastrointestinal endoscopy in asymptomatic Chinese

Area of Science:

• Gastroenterology
• Infectious Diseases
• Oncology

Background:

• H. pylori infection causes asymptomatic peptic ulcers and gastric cancer.
• Complications often arise before symptoms appear.
• Prevalence of H. pylori and related pathologies in asymptomatic Chinese requires investigation.

Purpose of the Study:

• To determine the prevalence of H. pylori.
• To assess H. pylori-related upper GI pathologies in asymptomatic Chinese.
• To identify risk factors for these conditions.

Main Methods:

• Questionnaire and screening esophagogastroduodenoscopy in asymptomatic patients.
• H. pylori detection via 13C urea breath test, rapid urease test, or histology.
• Analysis of H. pylori, erosive esophagitis, peptic ulcer, precancerous lesions, and malignancy in relation to demographics.

Main Results:

• 44% prevalence of active H. pylori infection.
• 7.8% erosive esophagitis, 9.1% peptic ulcer, and 0.5% gastric cancer.
• 67.4% had precancerous gastric lesions (atrophic gastritis, intestinal metaplasia, gastric dysplasia).
• Male sex, smoking, and H. pylori infection linked to peptic ulcers.
• Age and H. pylori infection associated with precancerous lesions.

Conclusions:

• H. pylori infection is a significant cause of upper GI pathology in asymptomatic Chinese.
• Findings support a national H. pylori testing and treatment program.
• Early detection and eradication of H. pylori are crucial for preventing severe GI diseases.