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*** Significant inflammatory infiltrate in the mucosa and sometimes deeper layers.
 
*** Significant inflammatory infiltrate in the mucosa and sometimes deeper layers.
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==Idiopathic Eosinophilic Enteritis==
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*Dairy cows
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*Thickened [[Small Intestine - Anatomy & Physiology|small intestine]], mesenteric lymphadenopathy.
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*[[Small Intestine - Anatomy & Physiology|small intestine]]
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**Marked oedema, lymphangiectasia without vasculitis
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**Eosinophilic infiltration of the intestinal mucosa (esp. at the villus tip).
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*Eosinophilic enteritis associated with hypoalbuminaemia, hypoglobulinaemia and eosinophilia in other species. The extent of the biochemical changes reflect the extent of the histological changes in the gut.
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**Not so in these cases.
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*In man, eosinophilic enteritis called if ≥20 eosinophils per HPF in the gut.
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*No cause in these cattle found … although loweed ingestion can cause eosinophilic gastroenteritis.
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[Idiopathic eosinophilic enteritis in 4 cattle. JAVMA (1998) 212 258-61]
      
==Granulomatous enteritis==
 
==Granulomatous enteritis==
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