Changes

**infected catheters or trauma due to catheters

**infected catheters or trauma due to catheters

**prolonged administration of some anticancer drugs such as cyclophosphamide

**prolonged administration of some anticancer drugs such as cyclophosphamide

**bacterial pathogens include [[Escherichia coli|''Escherichia coli'']], [[Bacteria#Staphylococcus spp.|''Staphylococcus'']], [[Bacteria#Streptococci|''Streptococcus'']] in small animals, [[Bacteria#Corynebacterium species|''Corynebacterium renale'']] in cattle and ''Eubacterium suis'' in pigs

**bacterial pathogens include [[Escherichia coli|''Escherichia coli'']], [[Bacteria#Staphylococcus spp.|''Staphylococcus'']], [[Bacteria#Streptococci|''Streptococcus'']] in small animals, [[Corynebacterium renale|''Corynebacterium renale'']] in cattle and ''Eubacterium suis'' in pigs

===Acute cystitis===

===Acute cystitis===

*Is a catarrhal inflammation initially.

*Is a catarrhal inflammation initially.