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Eosinophilic Infiltration of the Gastrointestinal Tract Minako FUJIWARA 1 1Department of Pathology, National Hospital Organization Kyushu Medical Center, Fukuoka, Japan Keyword: Eosinophilic infiltration , eosinophilic esophagitis (EoE) , eosinophilic gastroenteritis (EGE) pp.1343-1348
Published Date 2022/8/25
DOI https://doi.org/10.24479/endo.0000000284
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 In almost all gastrointestinal mucosa, eosinophils are normally observed in the lamina propria, but eosinophilic intraepithelial infiltration is rarely observed in the normal state. The histological features of eosinophilic esophagitis (EoE) are eosinophilic intraepithelial infiltration greater than 15/HPF at the upper-, middle-, and lower-esophagus, eosinophilic degranulation, and subepithelial fibrosis. In gastroesophageal reflux disease (GERD), various inflammatory cells are infiltrated, and eosinophilic infiltration is limited to the lower esophagus. No epithelial desquamation or subepithelial fibrosis is observed in GERD. On the other hand, it is difficult to histologically characterize eosinophilic gastroenteritis (EGE), because eosinophilic infiltration more than 20/HPF is often seen in the normal gastrointestinal mucosa, and more eosinophiles are often infiltrated in celiac disease, inflammatory bowel disease, or parasitic infectious disease. Multiple biopsies and careful collection of clinical information are important for diagnosis of EoE and EGE.


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電子版ISSN 印刷版ISSN 0915-3217 東京医学社

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