Derm Path 2 ()

• Provide some differentials for bovine mammillitis

  - Cowpox

  - Pseudocowpox

  - Papular stomatitis virus

  - Bovine herpesvirus 2
• Give four Ddx for this appearance

  - Cowpox

  - Pseudocowpox

  - Papular stomatitis virus

  - Bovine herpesvirus 2

  
• Which poxviruses are zoonotic?

  - Orf (Parapoxvirus)

  - Bovine papular stomatitis virus (Parapoxvirus)

  - Pseudocowpox (Parapoxvirus)

  - Cowpox (Orthopoxvirus)
• Give a viral Ddx

  Orf (Parapoxvirus)

  
• Give a viral Ddx

  Pseudopoxvirus (Parapoxvirus)

  
  

  *Zoonotic - bottom pics show "milker's nodules" on human hands

  
• Give a viral Ddx

  Papular stomatitis virus (Parapoxvirus)

  
• Which herpesvirus are associated with cutaneous diseases in cattle?

  Bovine herpesvirus 2
• What form of mammillitis is caused by BHV-2?

  Localized form

  
  

  *Note: other differentials for localized mammillitis include cowpox, pseudocowpox, and bovine papular stomatitis virus
• Which herpesvirus are associated with cutaneous diseases in horses?

  Equid herpesvirus 3
• You see these gross lesions in a stallion and brood mare. Describe the lesions and give a viral Ddx

  Gross appearance: Papules, bullae, ulceration

  
  

  Ddx: Equine herpesvirus 3

  
• Which herpesvirus are associated with cutaneous diseases in cats?

  Felid herpesvirus 1
• You are seeing a cat with persistent ulcerative lesions on the face and nose. Give a viral Ddx (hint: VERY COMMON)

  Felid herpesvirus-1 (AKA feline viral rhinotracheitis virus)

  
• Give a viral Ddx

  Cowpox (Orthopoxvirus)

  
• What are clinical manifestations of papillomavirus in dogs?

  - Oral viral-induced exophytic papillomas

  - Cutaneous exophytic papillomas

  - Inverted papilloma

  - Pigmented viral plaques
• Identify the gross lesions and give a Ddx for these lesions on a mini schnauzer

  Gross lesions: Pigmented macules, papules, and plaques

  Ddx: Canine pigmented viral plaques

  
• Give a Ddx for this dog

  Oral viral- induced exophytic papilloma

  
• Give a Ddx for this young dog that has recently recovered from parvo

  Canine cutaneous exophytic papillomas

  
• Give a Ddx for this dog

  Inverted papilloma

  
• What are clinical manifestations of papillomavirus in cats?

  - Viral plaques

  - Bowenoidin situcarcinoma (BISC)
• Give two Ddx for these lesions in a cat.

  
  

  How can we differentiate these two diagnoses?

  - Viral plaques- Bowenoidin situcarcinoma (BISC)

  Differentiate via histopathology

  
• What are clinical manifestations of papillomavirus in horses?

  - Equine viral papillomatosis

  - Aural plaques

  - Equine genital papillomas
• What does these lesions have in common?

  They are all equine viral papillomas

  
• What are clinical manifestations of papillomavirus in bovine?

  - Teat fibropapilloma

  -
• What is the etiologic agent for equine sarcoids?

  Bovinepapillomaviruses (BVP-1, 2, 13)

  
• True or false: Feline sarcoid-associated papillomavirus, the causative agent of feline sarcoids, is considered a novel bovine papillomavirus

  True

  
• Which species are affected by FMD?

  Cattle, pigs, sheep, and goats.

  
  

  Equids NOT affected
• Which species are affected by vesicular stomatitis?

  Cattle, pigs, and horses

  
  

  Sheep & goats rarely show signs
• True or false: Swine are the only domestic livestock species affected by swine vesicular disease

  True
• Which species are affected by vesciular exanthema of swine?

  Only swine
• True or false: Senecavirus A causes clinical disease swine and cattle

  False - only swine
• List a common cause of bacterial pyoderma in dogs

  Staphylococcus pseudointermedius
• List a common cause of bacterial pyoderma in horses

  Staphylococcus aureus
• What is the etiologic agentt of "rain scald," "rain rot," or "strawberry foot rot"?

  Dermatophilus congolensis

  
• List a common cause of bacterial pyoderma in pigs

  Staphylococcus hyicus
• Provide differentials for cutaneous infarcts/ear tip necrosis in pigs

  - Erysipelothrix rhusiopathiae

  - Salmonella cholerasuis

  - Staphylococcus

  - Pasteurella multocida
• "Greasy pig disease", or exudative epidermitis in pigs is caused by ___________ and affects piglets that are __________ days of age

  Staphylococcus hyicus

  5-35
• Which zoonotic fungal skin disease is reported in cats, dogs, and horses and caused by a soil/plant fungus, therefore nicknamed "rose-gardener's disease"?

  Sporotrichosis

  
• Pseudogymnoascus destructans is a pyschrophilic fungus responsible for causing __________ syndrome in _________

  white nose

  bats
• Pythium insidiosum is an oomycete (water mold) that causes what in horses?

  Pythiosis

  (AKA "Kunkers" or "swamp cancer")
• Give four Ddx for this lesion in a horse. How can you differentiate between them?

  - Pythiosis ("Kunkers"/"swamp cancer")

  - Cutaneous habronemiasis

  - Exuberant granulation tissue ("proud flesh")

  - Neoplasia

  
  

  Need histologic examination to determine cause