Pathology of the urinary system

1) Embolic nephritis (suppurative glomerulitis)

 

   ∙ 

caused by bacteremia, usually in young animals; especially pigs (

Actinobacillus suis

) and foals (

A. 

equuli

); 

   ∙ 

in acute cases, there is multifocal suppurative glomerulitis / nephritis → microscopically, bacterial 

colonies can be readily seen in glomerular and interstitial capillaries (bacterial colonies are often 

seen in other organs as well); 

   ∙ 

if the animal survives, the focal lesions may progress to grossly visible renal abscessation. 

 

 

2) Glomerulonephritis (GN)

 

   ∙ 

glomerulonephritis and glomerulopathy are a heterogenous group of diseases in which the 

morphologic change takes place primarily in the glomeruli → secondary tubulointerstitial and 

vascular changes; 

   ∙ 

“glomerulitis” is used when inflammation is restricted to the glomeruli, but usually the inflammation 

eventually extends to the rest of the nephron.