Risk of Neoplastic Progression Among Patients with an Irregular Z Line on Long-Term Follow-Up

Area of Science:

• Gastroenterology
• Oncology
• Digestive Diseases

Background:

• Barrett's esophagus (BE) is a complication of gastroesophageal reflux disease.
• Intestinal metaplasia (IM) is often found in patients with an irregular Z line.
• The clinical significance of an irregular Z line with or without IM requires further investigation.

Purpose of the Study:

• To assess the long-term development of BE and related complications in patients with an irregular Z line.
• To compare outcomes between patients with and without IM in the irregular Z line group.
• To evaluate the risk of dysplasia and esophageal adenocarcinoma in this cohort.

Main Methods:

• A cohort of 166 patients with an irregular Z line was followed for a median of 70 months.
• Patients were categorized into IM-positive (43%) and IM-negative groups.
• The incidence of BE, dysplasia, and esophageal adenocarcinoma was compared between groups via follow-up esophago-gastro-duodenoscopy (EGD).

Main Results:

• BE developed in 16% of IM-positive patients versus 1.9% of IM-negative patients.
• Low-grade dysplasia was observed in 4% of IM-positive patients.
• No patients developed high-grade dysplasia or esophageal adenocarcinoma.

Conclusions:

• An irregular Z line, even with IM, appears to carry a low risk for major BE complications within 5 years.
• Routine EGD follow-up may be considered for these patients.
• Further research could refine risk stratification and management strategies.