RT Journal Article T1 Eosinophilic Esophagitis: Review and Update. A1 Gomez Torrijos, Elisa A1 Gonzalez-Mendiola, Rosario A1 Alvarado, Manuela A1 Avila, Robledo A1 Prieto-Garcia, Alicia A1 Valbuena, Teresa A1 Borja, Jesus A1 Infante, Sonsoles A1 Lopez, M Pilar A1 Marchan, Eva A1 Prieto, Patricia A1 Moro, Mar A1 Rosado, Ana A1 Saiz, Vanessa A1 Somoza, M Luisa A1 Uriel, Olga A1 Vazquez, Angelina A1 Mur, Pilar A1 Poza-Guedes, Paloma A1 Bartra, Joan K1 allergens K1 elimination diet K1 eosinophilic esofagitis K1 eosinophilics K1 esophagoscopy AB Background: Eosinophilic esophagitis (EoE) was first described in the 1990s, showing an increasing incidence and prevalence since then, being the leading cause of food impaction and the major cause of dysphagia. Probably, in a few years, EoE may no longer be considered a rare disease. Methods: This article discusses new aspects of the pathogenesis, symptoms, diagnosis, and treatment of EoE according to the last published guidelines. Results: The epidemiological studies indicate a multifactorial origin for EoE, where environmental and genetic factors take part. EoE affects both children and adults and it is frequently associated with atopic disease and IgE-mediated food allergies. In patients undergoing oral immunotherapy for desensitization from IgE-mediated food allergy the risk of developing EoE is 2.72%. Barrier dysfunction and T-helper 2 inflammation is considered to be pathogenetically important factors. There are different patterns of clinical presentation varying with age and can be masked by adaptation habits. Besides, symptoms do not usually correlate with histologic disease activity. The diagnostic criteria for EoE has evolved but mainly requires symptoms of esophageal dysfunction with histologic evidence of a peak value of at least 15 eosinophils per high-power field. Endoscopies have to be repeated in order to diagnose, monitor, and treat EoE. Treatment of EoE can be started either by drugs (PPIs and topical corticosteroids) or elimination diets. The multistage step-up elimination diet management approach of EoE is promising. Endoscopic dilation is used for patients with severe dysphagia/food impaction with inadequate response to anti-inflammatory treatment. Conclusions: Research in recent years has contributed to a better understanding of EoE's pathogenesis, genetic background, natural history, allergy workup, standardization in assessment of disease activity, evaluation of minimally invasive diagnostic tools, and new therapeutic approaches. However, several unmet needs are to be solved urgently, as finding a non-invasive disease-monitoring methods and biomarkers for routine practice, the development or new therapies, novel food allergy testing to detect triggering foods, drug, and doses required for initial therapy and safety issues with long-term maintenance therapy, amongst others. Besides, multidisciplinary management units of EoE, involving gastroenterologists, pediatricians, allergists, pathologists, dietitians, and ENT specialists are needed. SN 2296-858X YR 2018 FD 2018-10-09 LK https://hdl.handle.net/10668/24484 UL https://hdl.handle.net/10668/24484 LA en DS RISalud RD Apr 18, 2025