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| − | ==Granulomatous Inflammation== | + | {{frontpage |
| | + | |pagetitle =Forestomach - Inflammatory Pathology |
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| | + | |contenttitle =Content |
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| − | ===[[Traumatic Reticulitis]]=== | + | <categorytree mode=pages>Forestomach - Inflammatory Pathology</categorytree> |
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| | + | </b></big> |
| | + | |logo =path-logo.png |
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| − | ===Mucormycosis===
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| − | * ''Mucor'', a fungi, invades the [[The Rumen - Anatomy & Physiology|rumen]] wall, e.g. after damage caused by [[Rumenal Acidosis|rumenal acidosis]].
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| − | * Produces chronic ongoing granulomatous rumenitis.
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| − | * Difficult to diagnose in life.
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| − | * May produce pain and poor growth
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| − | * Infective process may penetrate wall and produce peritonitis.
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| − | ====Pathology====
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| − | =====Gross=====
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| − | * Thickening and ulceration of mucosal surface of [[The Rumen - Anatomy & Physiology|rumen]].
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| − | ** Feels like thick leather.
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| − | *[[The Rumen - Anatomy & Physiology|Rumen]] wall becomes fibrosed.
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| − | =====Histological=====
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| − | * Classical granulomatous inflammation
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| − | ** May have giant cells in addition to sheets of [[Macrophages - WikiBlood|macrophages]].
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| − | * Can visualise fungal hyphae in tissue using special stains (PAS),
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| − | ** Often grow along blood vessels.
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| − | *** May cause thrombosis of small blood vessels, leading to further necrosis (infarction) of [[The Rumen - Anatomy & Physiology|rumen]] wall.
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| − | ==Neutrophilic Inflammation==
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| − | ===Rumenitis===
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| − | * Opportunistic pathogens take advantage of acidotic lesions and other disturbances of rumen flora.
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| − | ** e.g. ''F. necrophorum'', fungi
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| − | ** Infection with ''Mucor'' gives [[Mucormycosis|mucormycosis]]- chronic ongoing granulomatous rumenitis.
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| − | ** Also agents which cause lesions in other areas of tract e.g. BVDV, actinobacillosis.
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| − | ====Pathology====
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| − | =====Gross=====
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| − | * Multiple, dark red areas of swollen papillae, mainly in ventral sac and pillars.
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| − |
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| − | =====Histological=====
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| − | * Coagulative necrosis of papillae
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| − | * Marked neutrophil infiltrate
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| − | * Serofibrinous exudate
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| − | * Thromboembolic spread to form areas of coagulative necrosis and abscesses in [[Liver - Anatomy & Physiology|liver]].
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| | [[Category:Forestomach_-_Pathology]] | | [[Category:Forestomach_-_Pathology]] |
