Eosinophilic Esophagitis in Adults: A Concise Overview of an Evolving Disease

"Imaging Findings of Eosinophilic Gastrointestinal Diseases in Adults"

Eosinophilic gastrointestinal (GI) disorders are a group of conditions marked by pathologic eosinophilic infiltration of one or multiple locations in the GI tract. Conditions include eosinophilic esophagitis, eosinophilic gastritis, eosinophilic enteritis, and eosinophilic colitis. The site and depth of eosinophilic infiltration of the GI tract usually determines clinical presentation. These conditions should be considered in the differential diagnosis for several GI symptoms, such as food impaction or dysphagia. Histopathology is the gold standard for diagnosis of eosinophilic disorders. Nevertheless, findings from endoscopy, barium studies, computed tomography or magnetic resonance imaging, can aid in the diagnosis, by allowing for earlier diagnosis as well as proper management. Eosinophilic gastrointestinal disorders are typically managed with corticosteroids or dietary elimination. A high index of suspicion is required for diagnosis as it can often be challenging.

Novel Questionnaires for Assessing Signs and Symptoms of Eosinophilic Esophagitis in Children

BACKGROUND

Pediatric patients with eosinophilic esophagitis (EoE) experience heterogeneous symptoms and the patient's age may preclude reliable self-report of symptoms.

OBJECTIVE

The goal of this study was to develop a patient-reported outcome and an observer-reported outcome questionnaire to evaluate the signs and symptoms of EoE in pediatric patients (≥1 to <12 y of age) in a clinical trial setting.

METHODS

A concept-focused literature review, expert advice meetings, and concept elicitation interviews with pediatric EoE patients and their caregivers were conducted to identify disease-related signs and symptoms. Instructions, items, and response options were drafted. Cognitive debriefing interviews were conducted to evaluate children's and caregivers' ability to understand and respond to the questionnaires and to evaluate the comprehensiveness of the concepts measured.

RESULTS

Results from the literature review, expert advice meetings (n = 6), and concept elicitation interviews (n = 24) informed the development of the Pediatric Eosinophilic Esophagitis Sign/Symptom Questionnaire intended for use by patients (PESQ-P) with EoE 8 years or older to younger than 12 years and an observer-reported outcome questionnaire planned for use by caregivers of patients (PESQ-C) 1 year old or older to younger than 12 years. Both questionnaires measure the same concepts; the PESQ-P assesses the frequency, duration, and/or severity of symptoms and the PESQ-C assesses the presence/absence of the signs/symptoms. The cognitive debriefing interviews (n = 17) demonstrated that participants were able to comprehend and complete the questionnaires as intended.

CONCLUSIONS

This study provides evidence of the content validity of 2 novel questionnaires, PESQ-P and PESQ-C, designed to evaluate the symptom experience of pediatric EoE patients in a clinical trial setting.

The Yield of Endoscopy and Histology in the Evaluation of Esophageal Dysphagia: Two Referral Centers' Experiences

Background and Objectives: The initial diagnostic test required to evaluate esophageal dysphagia is upper endoscopy (EGD) to assess the structure of the esophagus and the esophageo-gastric junction (EGJ). Taking biopsies during EGD has become a common practice in patients with dysphagia to rule out eosinophilic esophagitis (EoE). The aims of this study were to evaluate the endoscopic findings of patients who underwent EGD for esophageal dysphagia, to assess the rate of biopsy taking from the esophagus to diagnose/exclude EoE, and to report histology outcomes of these biopsies. Materials and Methods: This was a retrospective multicenter study that included individuals ≥18 years who underwent EGD due to esophageal dysphagia between the years 2015 and2020, (with no other alarm signs, such as weight loss, new iron deficiency anemia, and lymphadenopathy). We obtained data from patients' electronic files. The endoscopy and histology findings were obtained from endoscopy reports saved in our electronic files. Results: A total of 209 patients were included in the study. The average age was 57.1 ± 17.1 years. The most common endoscopic findings were normal endoscopy in 76 patients (36.4%) and erosive esophagitis in 75 patients (35.9%). Barrett's esophagus and esophageal malignancy were encountered in 11 patients (5.3%) and 2 patients (0.95%), respectively. Esophageal biopsies were taken in 50.2% of patients, and one patient had histological evidence of EoE (0.5%). On univariate analysis, there was a trend for association between proton pump inhibitors (PPIs) use and a normal EGD, but it was not statistically significant (OR 0.28, 95% CI 0.07-1.11, p = 0.07). Conclusions: Endoscopic findings were prevalent in dysphagia patients even when no other alarm symptoms exist. Neoplastic lesions and EOE were rare in our study.

Prevalence of esophageal eosinophilia in patients referred for diagnostic upper gastrointestinal endoscopy

Background

Several conditions are associated with esophageal eosinophilia such as eosinophilic esophagitis (EoE) and gastro-esophageal reflux disease (GERD). The aim of this study was to detect the prevalence of esophageal eosinophilia in patients with upper gastrointestinal (GI) symptoms referred for diagnostic upper GI endoscopy. This study included 86 patients who underwent upper GI endoscopy and biopsies.

Results

Esophageal eosinophilia EE was found in 26 patients (30.2%): 3 patients (3.5%) had EoE and 23 patients (26.7%) had low-grade esophageal eosinophilia. The most common presenting symptoms were heart burn in 84 patients (97.7%) and upper abdominal pain in 78 patients (90.7%). Reflux esophagitis (ERD) was observed in 18.6% of patients. In histopathological examination, EoE was found in 3.5%, mild reflux esophagitis in 37.2%, and severe reflux esophagitis in 16.3%. There is statistically significant correlation between EE and male sex, hypertension, dysphagia, hiatus hernia, incompetent cardia, and fixed rings. Age, incompetent cardia, and dysphagia were statistically significant independent predictors of low-grade EE.

Conclusion

Esophageal eosinophilia EE was found in 30.2% of patients: 3.5% had eosinophilic esophagitis EoE and 26.7% had low-grade esophageal eosinophilia.