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Created page with '===Clinical=== * Usually only seen post mortem. * Stomach full of thick tarry clots. * Occasionally will vomit blood in life. ===Pat…'
===Clinical===
* Usually only seen post mortem.
* [[Forestomach - Anatomy & Physiology|Stomach]] full of thick tarry clots.
* Occasionally will vomit blood in life.
===Pathology===
[[Image:haemorrhagic gastritis.jpg|thumb|200px|right|Haemorrhagic gastritis (Courtesy of BioMed Image Archive)]]
====Gross====
* Wall of [[Forestomach - Anatomy & Physiology|stomach]] is blacked and ulcerated.
** Red, thickened, necrotic, haemorrhagic mucosa.
====Histologically====
* Coagulative necrosis with fibrin, oedema, haemorrhage, and sometimes emphysema.
* May extend deep into submucosa/muscle.
===Pathogenesis===
* There are several causes of haemorrhagic gastritis
*# Aspirin and non-steroidal anti inflammatory drug toxicity.
*# Peracute / acute infections, e.g.
*#* Swine Fever
*#* Anthrax
*#* Leptospirosis in dogs (''Leptospira icterohaemorrhagiae'').
*#Clostridial disease
*#* e.g. '''Braxy''' (''Clostridium septicum'')
*#** Affects older lambs or yearlings producing sudden death.
*#** Usually seen on sheep grazing on frosted grass so more common in colder areas.
*#** Bacterial exotoxin causes acute abomasitis.
*#** '''Pathology'''- At post mortem the [[Forestomach - Anatomy & Physiology|stomach]] is grossly distended with partially clotted blood. The wall of the [[Forestomach - Anatomy & Physiology|stomach]] is thickened,reddened and oedematous.
*#** Diagnosed by isolation of organism from the [[Forestomach - Anatomy & Physiology|stomach]] wall.
*#** Is now usually vaccinated against (Heptovac 7 in 1 clostridial vaccine).
*# [[Stomach and Abomasum Toxicology - Pathology#Warfarin Poisoning| Warfarin poisoning]].[[Category:Stomach_and_Abomasum_-_Inflammatory_Pathology]][[Category:Pig]][[Category:Sheep]]
* Usually only seen post mortem.
* [[Forestomach - Anatomy & Physiology|Stomach]] full of thick tarry clots.
* Occasionally will vomit blood in life.
===Pathology===
[[Image:haemorrhagic gastritis.jpg|thumb|200px|right|Haemorrhagic gastritis (Courtesy of BioMed Image Archive)]]
====Gross====
* Wall of [[Forestomach - Anatomy & Physiology|stomach]] is blacked and ulcerated.
** Red, thickened, necrotic, haemorrhagic mucosa.
====Histologically====
* Coagulative necrosis with fibrin, oedema, haemorrhage, and sometimes emphysema.
* May extend deep into submucosa/muscle.
===Pathogenesis===
* There are several causes of haemorrhagic gastritis
*# Aspirin and non-steroidal anti inflammatory drug toxicity.
*# Peracute / acute infections, e.g.
*#* Swine Fever
*#* Anthrax
*#* Leptospirosis in dogs (''Leptospira icterohaemorrhagiae'').
*#Clostridial disease
*#* e.g. '''Braxy''' (''Clostridium septicum'')
*#** Affects older lambs or yearlings producing sudden death.
*#** Usually seen on sheep grazing on frosted grass so more common in colder areas.
*#** Bacterial exotoxin causes acute abomasitis.
*#** '''Pathology'''- At post mortem the [[Forestomach - Anatomy & Physiology|stomach]] is grossly distended with partially clotted blood. The wall of the [[Forestomach - Anatomy & Physiology|stomach]] is thickened,reddened and oedematous.
*#** Diagnosed by isolation of organism from the [[Forestomach - Anatomy & Physiology|stomach]] wall.
*#** Is now usually vaccinated against (Heptovac 7 in 1 clostridial vaccine).
*# [[Stomach and Abomasum Toxicology - Pathology#Warfarin Poisoning| Warfarin poisoning]].[[Category:Stomach_and_Abomasum_-_Inflammatory_Pathology]][[Category:Pig]][[Category:Sheep]]