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  • Title: Esophageal Fibrosis in Eosinophilic Gastrointestinal Diseases.
    Author: Thaker AI, Melo DM, Samandi LZ, Huang R, Park JY, Cheng E.
    Journal: J Pediatr Gastroenterol Nutr; 2021 Mar 01; 72(3):392-397. PubMed ID: 33230074.
    Abstract:
    OBJECTIVES: Eosinophilic esophagitis (EoE), the most common eosinophilic gastrointestinal disease (EGID), is associated with lamina propria (LP) fibrosis. The relationship of EoE to other EGIDs is still unclear. We frequently observe cases of concurrent esophageal eosinophilia and extra-esophageal mucosal eosinophilia. The purpose of this study was to compare clinical, endoscopic, and histologic features, as well as the prevalence of esophageal LP fibrosis in children with EGID and concurrent esophageal eosinophilia to children with EoE. We also examine the current practices of pathologists in evaluating fibrosis. METHODS: We reviewed esophageal biopsies from index cases of EoE (N = 38), EGID with significant esophageal eosinophilia (≥15 eos/hpf) (EGID-SEE, N = 38), EGID with mild esophageal eosinophilia (1-14 eos/hpf) (EGID-MEE, N = 12), and EGID with no esophageal eosinophilia (EGID-NEE, N = 12) for LP presence, adequacy, and fibrosis. RESULTS: EoE and EGID-SEE cases share similar demographics, esophageal endoscopic features, and symptoms. A majority of EGID-SEE cases (71%) had adequate LP for the evaluation of fibrosis, similar to EoE cases (87%). The prevalence of esophageal fibrosis in EoE (79%) and EGID-SEE (55%) cases were similar, whereas no fibrosis was detected in the EGID-MEE and EGID-NEE cases. The fibrosis was patchy and often detected in the distal esophagus. Fourteen cases were reclassified from their original clinical diagnosis as having fibrosis by the study pathologists. CONCLUSIONS: Cases of EGID-SEE have overlapping features with EoE, suggesting that all EGIDs are part of a disease continuum. A consensus for the evaluation of LP fibrosis is needed.
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