Pediatric eosinophilic esophagitis effectively treated with a short-term 6-food-group elimination diet and reintroduction therapy

Rationale: Eosinophilic esophagitis (EoE) is an inflammatory disease diagnosed based on clinical symptoms and pathological findings. EoE is treated with proton pump inhibitors (PPIs), topical steroids, and elimination diet-reintroduction therapy. After remission is achieved with the elimination diet, foods can be reintroduced sequentially to identify specific food triggers; however, this reintroduction method was not previously standardized. Patient concerns: A 12-year-old girl presented to our hospital with a 3-year history of epigastric pain. Esophagogastroduodenoscopy revealed linear furrows, esophageal rings, white exudates, and pallor throughout the esophagus. Histopathological findings revealed eosinophilic infiltration >15 eos/hpf on esophageal biopsy. There were no obvious abnormal findings in the stomach and duodenum. Diagnoses: EoE Interventions and outcomes: Because PPI was ineffective, we proposed a 6-food-group elimination diet (SFGED) and reintroduction therapy for EoE, which was initially planned out over a 6-week interval. However, a 5-day interval of SFGED and reintroduction therapy was performed instead. The treatment was effective and causative food antigens (egg and nuts) were identified. Since her symptoms recovered following short-term treatment, the nutritional impact was minimized, as was the duration of her hospitalization. Consequently, the patient's quality of life was well-preserved. Lessons: SFGED and reintroduction therapy for EoE may be effective even for short-term treatments involving 5-day intervals.