Difference between revisions of "Bacterial skin infections - Pathology"
Jump to navigation
Jump to search
(Redirected page to Category:Integumentary System - Bacterial Infections) |
|||
| (3 intermediate revisions by the same user not shown) | |||
| Line 1: | Line 1: | ||
| − | # | + | <br> |
| + | Cutaneous bacterial infections tend to be called '''pyodermas'''. They are superficial, deep and are common in dogs, but less common in other species. | ||
| + | |||
| + | |||
| + | |||
| + | |||
| + | |||
| + | |||
| + | ===[[Deep Pyoderma]]=== | ||
| + | |||
| + | |||
| + | |||
| + | |||
| + | ====[[Bacterial Granulomatous Dermatitis]]==== | ||
| + | |||
| + | *Usually due to saprophytes | ||
| + | *Grossly: | ||
| + | **Diffuse or nodular lesions | ||
| + | **May ulcerate and form drainage fistulas | ||
| + | *Microscopically: | ||
| + | **Macrophages +/- multinucleated giant cells | ||
| + | **[[Necrosis - Pathology#Caseation Necrosis|Caseous necrosis]] and [[Neutrophils|neutrophils]] | ||
| + | *'''Mycobacterial granulomatous or pyogranulomatous lesions''' | ||
| + | **Usually caused by ''[[Mycobacterium lepraemurium]]'' (feline leprosy) or other ''Mycobacteria'' | ||
| + | **Most commonly lesions appear on head, neck and legs | ||
| + | *'''[[Botryomycosis]]''' | ||
| + | |||
| + | |||
| + | [[Category:Integumentary System - Bacterial Infections]] | ||
| + | |||
| + | ===[[Bacterial Pododermatitis]]=== | ||
| + | |||
| + | *Digital infections in ruminants | ||
| + | *'''[[Contagious Footrot]]''' | ||
| + | |||
| + | *'''[[Necrobacillosis]]''' of the foot | ||
| + | |||
| + | [[Category:Integumentary System - Bacterial Infections]] | ||
| + | |||
| + | |||
| + | ===[[Systemic Bacterial Infections]]=== | ||
| + | |||
| + | *[[Salmonella|'''Salmonellosis''']] | ||
| + | **Capillary dilatation and congestion -> cyanosis of external ears and abdoman | ||
| + | **Thrombosis -> necrosis of extremities | ||
| + | *'''Erysipelas''' in pigs | ||
| + | **Caused by [[Erysipelothrix rhusiopathiae|''Erysipelothrix rhusiopathiae'']] | ||
| + | **Vasculitis, thrombosis, ischaemia -> cutaneous lesions - firm, raises, rhomboidal pink to dark purple areas | ||
| + | *[[Clostridium novyi|''Clostridium novyi'']] | ||
| + | **Severe cellulitis, toxaemia and death of young rams during breeding season (due to traumatised heads) - 'big head' | ||
| + | *[[Streptococcus equi subsp. equi|''Streptococcus equi'']] | ||
| + | **In horses | ||
| + | **Immune complex vasculitis -> [[Haemorrhage#Purpura haemorrhagica|purpura]] | ||
| + | |||
| + | |||
| + | |||
| + | [[Category:Integumentary System - Bacterial Infections]] | ||
| + | |||
| + | |||
| + | [[Category:Integumentary System - Pathology]] | ||
Revision as of 19:10, 21 February 2011
Cutaneous bacterial infections tend to be called pyodermas. They are superficial, deep and are common in dogs, but less common in other species.
Deep Pyoderma
Bacterial Granulomatous Dermatitis
- Usually due to saprophytes
- Grossly:
- Diffuse or nodular lesions
- May ulcerate and form drainage fistulas
- Microscopically:
- Macrophages +/- multinucleated giant cells
- Caseous necrosis and neutrophils
- Mycobacterial granulomatous or pyogranulomatous lesions
- Usually caused by Mycobacterium lepraemurium (feline leprosy) or other Mycobacteria
- Most commonly lesions appear on head, neck and legs
- Botryomycosis
Bacterial Pododermatitis
- Digital infections in ruminants
- Contagious Footrot
- Necrobacillosis of the foot
Systemic Bacterial Infections
- Salmonellosis
- Capillary dilatation and congestion -> cyanosis of external ears and abdoman
- Thrombosis -> necrosis of extremities
- Erysipelas in pigs
- Caused by Erysipelothrix rhusiopathiae
- Vasculitis, thrombosis, ischaemia -> cutaneous lesions - firm, raises, rhomboidal pink to dark purple areas
- Clostridium novyi
- Severe cellulitis, toxaemia and death of young rams during breeding season (due to traumatised heads) - 'big head'
- Streptococcus equi
- In horses
- Immune complex vasculitis -> purpura