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| | *bacteria can enter the [[Liver - Anatomy & Physiology|liver]] through a variety of routes | | *bacteria can enter the [[Liver - Anatomy & Physiology|liver]] through a variety of routes |
| | **direct implantation | | **direct implantation |
| − | ***eg foreign body penetration from [[The Reticulum - Anatomy & Physiology|reticulum]] | + | ***eg foreign body penetration from [[Reticulum - Anatomy & Physiology|reticulum]] |
| − | **direct extension from disease in adjacent tissues of supportive [[Peritoneal Cavity Inflammatory - Pathology|peritonitis]] | + | **direct extension from disease in adjacent tissues of supportive [[Peritonitis|peritonitis]] |
| | **haematogenously | | **haematogenously |
| | ***via the umbilical vein from an infected umbilicus | | ***via the umbilical vein from an infected umbilicus |
| − | ***via the portal vein in the [[Alimentary - Anatomy & Physiology|alimentary tract]] | + | ***via the portal vein in the [[Alimentary System Overview - Anatomy & Physiology|alimentary tract]] |
| | ***via the hepatic artery in bacteraemias and septicaemias | | ***via the hepatic artery in bacteraemias and septicaemias |
| | ***via the bile ducts | | ***via the bile ducts |
| | *the [[Liver - Anatomy & Physiology|liver]] may show microscopic evidence of involvement in a large variety of systemic infections | | *the [[Liver - Anatomy & Physiology|liver]] may show microscopic evidence of involvement in a large variety of systemic infections |
| | *these can be accompanied by jaundice | | *these can be accompanied by jaundice |
| − | *the changes in the [[Liver - Anatomy & Physiology|liver]] are diffuse with many small areas of necrosis surrounded by [[Neutrophils - WikiBlood|neutrophils]] and [[Lymphocytes - WikiBlood|lymphocytes]] | + | *the changes in the [[Liver - Anatomy & Physiology|liver]] are diffuse with many small areas of necrosis surrounded by [[Neutrophils|neutrophils]] and [[Lymphocytes - Introduction|lymphocytes]] |
| | **eg Salmonellosis or Listeriosis | | **eg Salmonellosis or Listeriosis |
| | </div> | | </div> |
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| | </b></big> | | </b></big> |
| − | |logo = | + | |logo =path-logo.png |
| | }} | | }} |
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| − | [[Bacillary Haemoglobinuria]]
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| − | [[Tyzzer's Disease]]
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| − | ====[[Leptospirosis - Cats and Dogs]]====
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| − | ====Salmonellosis====
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| − | *''Salmonella dublin''
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| − | *calves
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| − | =====Clinical=====
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| − | *fever
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| − | *dehydration
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| − | *[[Diarrhoea|diarrhoea]]
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| − | =====Gross=====
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| − | *severe, often haemorrhagic, inflammation in the [[Ileum - Anatomy & Physiology|ileum]]
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| − | *'''paratyphoid nodules''' - pale foci of necrosis in the [[Liver - Anatomy & Physiology|liver]]
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| − | =====Microscopically=====
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| − | *foci of hepatocytic necrosis
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| − | *mixed mononuclear inflammatory cell infiltrate
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| − | NB: small foci of hepatocytic necrosis are often found as incidental lesions at post mortem examination
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| − |
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| − | ====Other bacteria causing liver lesions====
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| − | =====''Mycobacterium tuberculosis''=====
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| − | *in all species
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| − | *causes granulomas
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| − |
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| − | =====''Actinobacillus equuli''=====
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| − | *foals
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| − | *bacteria from the septicaemia localise in the [[Liver - Anatomy & Physiology|liver]] and other tissues, including the [[Urinary System - Anatomy & Physiology#Upper Urinary System|kidney]]
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| − |
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| − | =====''Nocardia species''=====
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| − | *dogs
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| − | *cause pyogranulomatous foci
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| | [[Category:Liver_-_Inflammatory_Pathology]] | | [[Category:Liver_-_Inflammatory_Pathology]] |