Difference between revisions of "Bovine Papular Stomatitis"

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Papular proliferative pathology
 
Papular proliferative pathology
 
[[Image:BPS.gif|right|thumb|125px|<small><center>Ring Zone Lesions of BPS - Calf (Courtesy of Alun Williams (RVC))</center></small>]]
 
[[Image:BPS.gif|right|thumb|125px|<small><center>Ring Zone Lesions of BPS - Calf (Courtesy of Alun Williams (RVC))</center></small>]]
 +
[[Image:BPSOES.gif|right|thumb|125px|<small><center>Oesophageal lesions of BPS (Courtesy of Alun Williams (RVC))</center></small>]]
 +
 
*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.   

Revision as of 11:28, 28 May 2010

Papular proliferative pathology

Ring Zone Lesions of BPS - Calf (Courtesy of Alun Williams (RVC))
Oesophageal lesions of BPS (Courtesy of Alun Williams (RVC))
  • 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.