* Can visualise fungal hyphae in tissue using special stains (PAS),
* Can visualise fungal hyphae in tissue using special stains (PAS),
** Often grow along blood vessels.
** 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.[[Category:Forestomach_-_Inflammatory_Pathology]][[Category:Cattle]]
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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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Caused by a fungus of the ''Mucoracae'' family. Causes a granulomatous rumenitis in cattle with sheets of macrophages and '''giant cells''' vvisble on histopathology. Grossly the rumen is thickened and fibrosed and may become ulcerated.
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The infection may penetrate the rumen wall leading to a peritonitis. It may also enter blood vessels leading to a thrombosis, infarction and further damage to the vessel wall.
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Fungal hyphae are identified histologically with the stain PAS (Periodic acid Schiff) where they stain as purple/red rod like structures.