PubMed · 13261982
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F Deucher. 1955. [Ulcerative colitis].. https://pubmed.ncbi.nlm.nih.gov/13261982/
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There is substantial evidence that allergic reactions exist in the gastrointestinal tract (GI). However, patients with food allergy-related enteropathy pose a diagnostic challenge to physicians because the clinical features are variable, unspecific, occur in other gastrointestinal disorders, and specific diagnostic tools are missing. Several recent studies and reviews have focused on the function of eosinophilic granulocytes in GI disease. The role of eosinophils in the pathophysiology of GI hypersensitivity reactions is poorly defined. However, some findings have been reported that imply an involvement of eosinophils in allergic reactions of the gut. The presumptive histology of allergy-associated colitis in colonic and ileal biopsies is based on prominent pure eosinophilic infiltration of a normal lamina propria, submucosa and epithelium with variable degrees of degranulation. An immunoperoxidase stain for eosinophilic peroxidase is supportive in establishing the diagnosis if suspected. Neutrophils or mononuclear infiltrates are not significantly increased and damage to the intestinal tissue is not prominent. Despite characteristic histologic changes in colonic biopsy specimens, a final diagnosis depends on careful clinical examination and exclusion of several differential diagnoses.
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