Chronic Diarrhea Due to Eosinophilic Enterocolitis With Coexisting Eosinophilic Esophagitis.

Eosinophilic gastrointestinal disorders (EGIDs) are a spectrum of disorders including eosinophilic esophagitis, eosinophilic gastroenteritis, and eosinophilic colitis. We report a case of EGID involving the esophagus, small intestine, and large intestine simultaneously. A 38-year-old male patient presented with chronic diarrhea, abdominal pain, and unquantified weight loss for the last two months, which not improving with routine empirical treatment. Endoscopy revealed erosions in the stomach, duodenum, terminal ileum, and proximal colon. Biopsy revealed eosinophilic infiltration in the esophagus, terminal ileum, and proximal colon. Contrast-enhanced CT showed multiple skip areas of short- and long-segment circumferential mural thickening with enhancement in the jejunum and ileal loops, causing mild luminal narrowing with pelvic ascites, indicating involvement of muscular and probably serosal layer to a lesser degree (absence of obstructive symptoms with minimal ascites) along with predominant mucosal involvement (responsible for clinical symptoms). The patient was treated with elimination diet, systemic corticosteroids, and montelukast. Diarrheal episodes decreased, and the treatment was shifted to oral budesonide. We believe it to be one of the first reports to show a simultaneous involvement of the esophagus, small intestine, and large intestine, along with mucosal and mural involvement. It strengthens the fact that a common underlying pathogenesis causes EGIDs and an underlying muscular layer involvement in patients with predominant mucosal disease.