Difference between revisions of "Bovine Papular Stomatitis"
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m (Text replace - "Category:To_Do_-_Viruses" to "Category:To_Do_-_Clinical/Viruses") |
m (Text replace - "[[Stomach and Abomasum - Anatomy & Physiology|" to "[[Ruminant Stomach - Anatomy & Physiology|") |
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Line 7: | Line 7: | ||
*'''Must be differentiated from [[Foot and Mouth Disease]] and [[BVD|Mucosal Disease.]]''' | *'''Must be differentiated from [[Foot and Mouth Disease]] and [[BVD|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 | + | *Develop papules on the muzzle, external nares and in the [[Oral Cavity Overview - Anatomy & Physiology|oral cavity]]; the [[Oesophagus - Anatomy & Physiology|oesophagus]] and [[Ruminant Stomach - Anatomy & Physiology|forestomachs]] may also be affected. |
*Usually heals spontaneously. | *Usually heals spontaneously. | ||
=====Pathogenesis===== | =====Pathogenesis===== |
Revision as of 13:27, 6 September 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.