Difference between revisions of "Bovine Papular Stomatitis"
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*Parapox virus | *Parapox virus | ||
*Very similar disease to orf but seen in cattle and generally milder condition. | *Very similar disease to orf but seen in cattle and generally milder condition. | ||
| − | *'''Must be differentiated from [[Foot and Mouth Disease]] and [[Bovine Viral Diarrhoea|Mucosal Disease.]]''' | + | *'''Must be differentiated from [[Foot and Mouth Disease]] and [[Bovine Viral Diarrhoea Virus|Mucosal Disease.]]''' |
*Sporadic, in cattle, less than 1 year old. | *Sporadic, in cattle, less than 1 year old. | ||
*Develop papules on the muzzle, external nares and in the [[Oral Cavity Overview - Anatomy & Physiology|oral cavity]]; the [[Oesophagus - Anatomy & Physiology|oesophagus]] and [[Stomach and Abomasum - Anatomy & Physiology|forestomachs]] may also be affected. | *Develop papules on the muzzle, external nares and in the [[Oral Cavity Overview - Anatomy & Physiology|oral cavity]]; the [[Oesophagus - Anatomy & Physiology|oesophagus]] and [[Stomach and Abomasum - Anatomy & Physiology|forestomachs]] may also be affected. | ||
Revision as of 15:47, 25 May 2010
Papular proliferative pathology
- Parapox virus
- Very similar disease to orf but seen in cattle and generally milder condition.
- Must be differentiated from Foot and Mouth Disease and Mucosal Disease.
- Sporadic, in cattle, less than 1 year old.
- Develop papules on the muzzle, external nares and in the oral cavity; the oesophagus and forestomachs may also be affected.
- Usually heals spontaneously.
Pathogenesis
- The early lesions are round areas of intense congestion up to 1.5 cm in diameter.
- The centre becomes necrotic and slightly depressed.
- Slow peripheral extension of this lesion gives a classical ring zone formation with concentric rings of
- yellow (necrosis),
- grey (epithelial hyperplasia)
- red (congestion).
Histology
- There are focal areas of hydropic degeneration in the stratum spinosum
- Large eosinophilic intracytoplasmic inclusion
- Epidermis is markedly thickened.
- The superficial layers of the epithelium become necrotic and slough.
- Vesicle formation is not a feature of this disease.