Map-Like Redness Development After Eradication Therapy for Helicobacter pylori Infection: Prospective Multicenter...

Area of Science:

• Gastroenterology
• Oncology
• Endoscopy

Background:

• Map-like redness, a pathological intestinal metaplasia, is an emerging endoscopic risk factor for gastric cancer post-Helicobacter pylori eradication.
• Its presence is noted in 25-33% of patients one year after treatment, primarily in the gastric corpus.
• The pre-existence of intestinal metaplasia at the site of future map-like redness before eradication remains unclear.

Purpose of the Study:

• To identify pre-eradication endoscopic findings that predict the development of map-like redness.
• To investigate the association between gastritis severity and map-like redness occurrence.
• To assess the significance of intestinal metaplasia in predicting post-eradication findings.

Main Methods:

• A prospective multicenter trial was conducted.
• Endoscopic evaluations were performed before and one year after successful H. pylori eradication.
• Patient characteristics and gastritis severity (including intestinal metaplasia and nodularity) were analyzed.

Main Results:

• Map-like redness developed in 30.1% of patients one year post-eradication.
• All patients with map-like redness showed pre-existing intestinal metaplasia at the affected site.
• Increased severity of intestinal metaplasia, nodularity, and higher Kyoto scores were associated with map-like redness development.

Conclusions:

• Endoscopic intestinal metaplasia preceding eradication therapy is a prerequisite for map-like redness development.
• Map-like redness is particularly prevalent in patients with more severe intestinal metaplasia one year after eradication.
• These findings underscore the importance of heightened surveillance for gastric cancer in affected individuals.