Clinical Report: Evaluation of Diagnostic Effectiveness of Endoscopic Techniques

Overview

This study compares the diagnostic efficacy of white light endoscopy (WLE), narrow band imaging (NBI), and iodine staining for early esophageal cancer (EC) and precancerous lesions.

Background

Esophageal cancer (EC) is a major global health concern, particularly in developing countries. Conventional WLE often fails to identify early EC and precancerous lesions due to non-specific visual cues. Enhanced imaging techniques like NBI and iodine staining have emerged as potential solutions for improving diagnostic accuracy.

Data Highlights

Key Findings

• The study included 55 patients with 63 suspected lesions.
• 5 cases of early EC and 37 cases of precancerous lesions were confirmed.
• Kappa values indicated poor agreement for WLE, fair for NBI and iodine staining, and substantial for the combined method.
• The false positive rate for mucosal staining was lower than that for background coloration.

Clinical Implications

The findings suggest that combining NBI and iodine staining can improve the detection of early EC and precancerous lesions, which may influence endoscopic practices. Clinicians should consider utilizing these combined techniques for enhanced diagnostic accuracy.

Conclusion

The study demonstrates that both NBI and iodine staining are effective for detecting early EC and precancerous lesions.

Related Resources & Content

1. Surgical Endoscopy, 2022 -- Enhanced color imaging techniques facilitate the detection of early gastric cancer lesions by both experienced and novice endoscopists
2. Journal of Gastroenterology, 2022 -- An Overview of Linked Color Imaging in Gastric Cancer Screening: Current Insights and Future Directions
3. Surgical Endoscopy, 2022 -- Evaluation of Diagnostic Efficacy of NBI, Laser-BLI, and LED-BLI: A Randomized Controlled Noninferiority Study
4. Surgical Endoscopy, 2024 -- Comparative Efficacy of Various Resolution Endoscopy Techniques for Identifying Mucosal Lesions in the Upper Gastrointestinal Tract
5. European Society of Gastrointestinal Endoscopy, 2025 -- ESGE Guidelines
6. PubMed, 2026 -- Efficacy of combined use of magnifying narrow-band imaging/blue laser imaging and Lugol chromoendoscopy for tumor extent delineation in esophageal squamous cell carcinoma
7. American Gastroenterological Association, 2025 -- Surveillance of Barrett’s esophagus
8. NICE Guidance on Barrett's Oesophagus and Stage 1 Oesophageal Adenocarcinoma
9. 25597 1..30
10. Efficacy of combined use of magnifying narrow-band imaging/blue laser imaging and Lugol chromoendoscopy for tumor extent delineation in esophageal squamous cell carcinoma - PubMed
11. Surveillance of Barrett’s esophagus - American Gastroenterological Association