Clinical Characteristics of Children with Eosinophilic Esophagitis and Bulbar Duodenitis

Area of Science:

• Gastroenterology
• Pediatric Gastroenterology
• Histopathology

Background:

• Eosinophilic esophagitis (EoE) is a chronic allergic inflammatory disease of the esophagus.
• Incidental inflammation in the duodenal bulb, termed bulbar duodenitis (BD), is increasingly recognized.
• The association between EoE and BD requires further investigation.

Purpose of the Study:

• To describe the clinical, endoscopic, and histological characteristics of bulbar duodenitis in a cohort of patients with eosinophilic esophagitis.
• To determine the prevalence and timing of bulbar duodenitis diagnosis in relation to eosinophilic esophagitis.

Main Methods:

• Retrospective cohort study of 33 patients diagnosed with eosinophilic esophagitis.
• Review of patient demographics, clinical presentation, endoscopic findings, and bulbar histological data.
• Analysis of the occurrence of bulbar duodenitis at initial versus subsequent endoscopies.

Main Results:

• Bulbar duodenitis was identified in 36% of patients at initial endoscopy and in the remainder at subsequent procedures.
• The majority of patients (96.9%) had active eosinophilic esophagitis at the time of bulbar duodenitis diagnosis.
• Histological examination of the duodenal bulb typically revealed a mixed pattern of chronic and eosinophilic inflammation.

Conclusions:

• Bulbar duodenitis is a notable finding in children with eosinophilic esophagitis.
• Routine endoscopic examination and consideration of biopsies of the duodenal bulb are warranted in pediatric EoE patients.
• Further research is needed to elucidate the relationship between EoE and bulbar duodenitis.