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==Introduction==
 
==Introduction==
Pulmonary Infiltration with Eosinophilia is a broad term describing inflammatory lung disease in which the predominant infiltrating cell is the eosinophil. It is thought to be an immune mediated condition where the airway abnormalities are a consequence of a reaction to an unidentified allergen.  
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Pulmonary Infiltration with Eosinophilia is a broad term describing an inflammatory lung disease in which the predominant infiltrating cell is the eosinophil. It is thought to be an immune mediated condition where the airway abnormalities are a consequence of a hypersensitivity reaction to an unidentified allergen such as microfilariae of heartworms, lungworms, chronic bacterial or fungal infections (eg, histoplasmosis, aspergillosis), viruses, external antigens, and unknown precipitating factors
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<br> '''Eosinophillic pulmonary granulomatosis''' is a severe type of PIE seen in dogs and is characterzied by the development of nodules and hilar lymphadenopathy. It is most often associted with a hypersensitivity reaction to microfilarie in heartworm infection.  
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*A group of small animal diseases in which there is a predominance of eosinophils in the airways
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*Generally considered that there is underlying hypersensitivity to allergens
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[[Category:Allergic Respiratory Diseases]][[Category:To Do - Blood]][[Category:To Do - Clinical]]
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[[Category:Allergic Respiratory Diseases]][[Category:To_Do_-_KatieB]]
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