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Eosinophilic Gastroenteritis: An Underdiagnosed Condition.

BACKGROUND: Eosinophilic gastroenteritis (EOGE) is a rare idiopathic disease characterized by eosinophil-predominant inflammation of the stomach and/or intestines. Our aims are to determine the epidemiology, clinical features and outcomes of EOGE cases in a tertiary-care hospital.

METHODS: Retrospective cohort study of patients with gastrointestinal eosinophilic infiltration from 2004 through 2014. All relevant specimens were reviewed by an expert pathologist. Significant eosinophilic infiltrate was defined as >25 eosinophils/HPF in the stomach or small intestine and >50 eosinophils/HPF in the colon.

RESULTS: Three hundred and sixty-one charts were reviewed and 13 EOGE cases were identified, including nine adults and four pediatric cases. The majority (78 %) of adult cases were females. Clinical presentation was variable; most patients (62 %) had abdominal pain, followed by diarrhea (31 %) and nausea/vomiting (31 %). Atopy and food allergies were present in 54 and 38 % of patients, respectively. Weight loss and failure to thrive were present only in pediatric cases (50 vs 0 %; P = .01). Most EOGE cases (69 %) had peripheral eosinophilia, which was more prominent in patients with ascites compared to patients without ascites (37.3 ± 25.4 vs 9.3 ± 5.4 %; P = .01). Among patients who had long-term follow-up; 30 % had spontaneous remission, 60 % responded to steroids and/or restriction diet, and 10 % had refractory disease.

CONCLUSION: EOGE is an underdiagnosed condition. In contrast to eosinophilic esophagitis; the disease might be female-predominant in adults. High index of clinical suspicion is required for diagnosis. Further studies about the long-term outcomes and the efficacy of restriction diet in adult patients are required.

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