Global variations in diagnostic guidelines for Barrett's esophagus

Area of Science:

• Gastroenterology
• Endoscopy
• Oncology

Background:

• Endoscopic diagnosis of the gastroesophageal junction (GEJ) and Barrett's esophagus (BE) is vital for early detection of esophageal adenocarcinoma and esophagogastric junction cancer.
• International guidelines present challenges due to differing diagnostic methods for BE, highlighting the need for a clear GEJ definition.
• Landmarks like gastric folds and palisade vessels aid GEJ identification but can be obscured by factors such as air insufflation or reflux esophagitis.

Purpose of the Study:

• To address inconsistencies in international guidelines for diagnosing Barrett's esophagus.
• To emphasize the importance of a standardized endoscopic definition of the gastroesophageal junction.
• To explore regional variations in Barrett's esophagus characteristics and their impact on carcinogenesis risk.

Main Methods:

• Review of current endoscopic diagnostic criteria for the gastroesophageal junction and Barrett's esophagus.
• Analysis of international guideline discrepancies regarding Barrett's esophagus diagnosis, including the role of intestinal metaplasia.
• Evaluation of advanced imaging technologies (e.g., narrow-band imaging, linked color imaging) and artificial intelligence in BE diagnosis.

Main Results:

• Discrepancies exist in international guidelines for diagnosing Barrett's esophagus, particularly concerning the definition of the gastroesophageal junction and the significance of intestinal metaplasia.
• The utility of palisade vessels for diagnosing malignancy in short segments (<1 cm) of Barrett's esophagus requires further investigation.
• Advanced imaging and AI show promise but rely on a foundational, universally accepted endoscopic definition of the GEJ.

Conclusions:

• A standardized, globally consistent endoscopic definition of the gastroesophageal junction is essential for accurate Barrett's esophagus diagnosis.
• Further research is needed to understand regional variations in Barrett's esophagus and their association with cancer risk.
• Integrating advanced imaging and AI with a clear GEJ definition can improve early detection and surveillance of esophageal cancers.