Diffuse Esophageal Narrowing in Eosinophilic Esophagitis: A Barium Contrast Study

Area of Science:

• Gastroenterology
• Radiology
• Esophageal Diseases

Background:

• Eosinophilic esophagitis (EoE) commonly causes mechanical dysphagia.
• Barium esophagrams in EoE can show focal strictures or rings, but diffuse narrowing is hard to detect without normative data.

Purpose of the Study:

• To compare esophageal diameters at multiple sites in healthy controls versus patients with EoE.
• To establish normative esophageal diameter data for comparison in EoE diagnosis.

Main Methods:

• A standardized barium swallow was performed on 22 healthy males and 10 untreated EoE patients.
• Maximal esophageal diameter was measured at three sites using a radiopaque ruler by a blinded observer.
• Correlations were assessed between esophageal diameters, eosinophil counts, and dysphagia scores in EoE patients.

Main Results:

• Two EoE patients exhibited focal esophageal narrowing on barium X-ray.
• EoE patients showed significantly smaller esophageal diameters at all measured sites compared to controls.
• Four of 10 EoE patients had esophageal diameters below the 95th percentile of controls; no correlation was found with eosinophil counts or dysphagia scores.

Conclusions:

• Patients with EoE exhibit diffuse esophageal narrowing compared to healthy individuals.
• Accurate diagnosis of diffuse esophageal narrowing in EoE requires established normative data.