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Veterinary Education Online (view source)

Revision as of 09:53, 13 August 2012

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<center>'''What is your diagnosis?'''</center>
 
<center>'''What is your diagnosis?'''</center>
 
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A farmer complains of severe skin lesions on the muzzle and lips of approximately 25% of 120 6-month-old lambs, 10–14 days after movement on to pastures containing large numbers of thistles (site of special scientific interest). The skin is oedematous with serous exudation and superficial pus accumulation, has become desiccated, forming hard scabs separated by deep fissures. Careful removal of a scab reveals a deep bed of exuberant granulation tissue. Scab material narrowing the nostrils causes dyspnoea with stertor and abdominal breathing in some lambs.
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An 8-month-old kitten is presented for raised, firm, pencil-like lesions on the caudal aspects of both hind legs. The owner reports the lesions developed rapidly but do not seem bothersome to the kitten. Dermatological examination reveals hard, linear lesions in the superficial dermis. Skin biopsies reveal eosinophilic granulomatous inflammation and collagen degeneration.
 
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[[Image:Sheep Medicine 5.jpg|center|200px|link=Sheep Medicine Q&A 05]]
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[[Image:Small Animal Dermatology Q&A 05a.jpg|center|200px|link=Small Animal Dermatology Q&A 05]]
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<center>Test yourself [[Sheep Medicine Q&A 05|here]].</center>
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<center>Test yourself [[Small Animal Dermatology Q&A 05|here]].</center>
     
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