Digestive endoscopy: relevance of negative findings

Area of Science:

• Gastroenterology
• Diagnostic Endoscopy
• Public Health

Background:

• Endoscopy is the gold standard for investigating digestive complaints, with positive findings in 30-40% of upper GI endoscopies.
• Negative findings in 60-70% of cases often point to functional disorders like dyspepsia and reflux.
• Colonoscopy primarily screens for colorectal cancer, detecting early-stage, curable cancers in asymptomatic individuals.

Purpose of the Study:

• To evaluate the reliability and implications of negative endoscopic findings.
• To discuss the role of repeated negative endoscopies in patient management and screening protocols.
• To explore the future of endoscopy in primary digestive diagnosis amidst emerging technologies.

Main Methods:

• Review of current practices and literature regarding upper and lower digestive endoscopy.
• Analysis of the diagnostic yield and patient outcomes associated with negative endoscopic results.
• Consideration of factors influencing the cost-effectiveness and patient quality of life post-endoscopy.

Main Results:

• Negative endoscopy findings are reliable when performed by experienced endoscopists, minimizing false negatives/positives.
• A reliable negative endoscopy can improve patient quality of life by reducing anxiety and may be cost-effective.
• Overuse of negative endoscopy often stems from repeated procedures rather than broad indications.

Conclusions:

• The relevance of repeated negative endoscopy for cancer screening in the upper and lower digestive tract requires careful consideration, with a trend towards increased surveillance intervals.
• The primary diagnostic role of endoscopy may be challenged by concurrent techniques in the future.
• Advancements in endoscopy rely on quality assurance, operator experience, cost control, and research into patient tolerance and sedation reduction.