Changes

==Introduction==

==Introduction==

Some diseases can target the lymph nodes and they become actively involved in the diseae process, and these are listed below according to their causal organism and presenting symptoms. The lymph node is also a suitable place to biopsy when looking for evidence of other systemic diseases which can be diagnosed by locating evidence of them in the node. These include Canine Distemper Virus, Swine Fever, Bovine East Caost Fever and Canine Leishmaniasis.  

Some diseases can target the lymph nodes and they become actively involved in the disease process, and these are listed below according to their causal organism and presenting symptoms. The lymph node is also a suitable place to biopsy when looking for evidence of other systemic diseases which can be diagnosed by locating evidence of them in the node using immunological laboratory techniques. These include [[Canine Distemper Virus]], [[Classical Swine Fever]], [[East Coast Fever|Bovine East Coast Fever]] and [[Leishmania|Canine Leishmaniasis]].  

==Diseases Involving Both Reactive Nodes and Lymphadenitis==

==Parasitic Diseases==

===[[Tuberculosis - Cattle]]===

:[[Parasitic Bronchitis - Cattle|Bovine Parasitic Bronchitis]]

:[[Fascioliasis]]

===viz. brucellosis and Johne's disease===

==Bacterial Diseases==

===Johne's disease===

==Diseases Involving Both Reactive Nodes and Lymphadenitis==

===Actinobacillosis===

===Actinomycosis===

:[[Bovine Brucellosis|Brucellosis]] and [[Johne's Disease]]: chronicity is caused by persistence of intacellular bacteria in lymph node macrophages, [[Type IV Hypersensitivity|Type IV hypersensitivity]], but does not result in visible necrosis as in TB

===Equine strangles===

:Actinobacillosis in [[Actinobacillosis - Cattle|Cattle]] and [[Actinobacillosis - Pig|Pigs]]

* acute inflammation

:[[Actinomycosis]]

* produce pyogenic or necrotic foci in the drainage nodes

:[[Strangles|Equine Strangles]]

:Streptococcal adenitis or head gland disease causing acute inflammation similar to the above in dogs

[[Category:Lymph Node Responses to Disease Processes]]

[[Category:Lymph Nodes]]