Category:Hepatitis, Bacterial
Jump to navigation
Jump to search
Hepatitis, Bacterial
- bacteria can enter the liver through a variety of routes
- direct implantation
- eg foreign body penetration from reticulum
- direct extension from disease in adjacent tissues of supportive peritonitis
- haematogenously
- via the umbilical vein from an infected umbilicus
- via the portal vein in the alimentary tract
- via the hepatic artery in bacteraemias and septicaemias
- via the bile ducts
- direct implantation
- the liver may show microscopic evidence of involvement in a large variety of systemic infections
- these can be accompanied by jaundice
- the changes in the liver are diffuse with many small areas of necrosis surrounded by neutrophils and lymphocytes
- eg Salmonellosis or Listeriosis
Leptospirosis - Cats and Dogs
Salmonellosis
- Salmonella dublin
- calves
Clinical
- fever
- dehydration
- diarrhoea
Gross
- severe, often haemorrhagic, inflammation in the ileum
- paratyphoid nodules - pale foci of necrosis in the liver
Microscopically
- foci of hepatocytic necrosis
- mixed mononuclear inflammatory cell infiltrate
NB: small foci of hepatocytic necrosis are often found as incidental lesions at post mortem examination
Other bacteria causing liver lesions
Mycobacterium tuberculosis
- in all species
- causes granulomas
Actinobacillus equuli
Nocardia species
- dogs
- cause pyogranulomatous foci
Pages in category "Hepatitis, Bacterial"
The following 8 pages are in this category, out of 8 total.