Sporotrichosis

• Caused by Sporothrix schenckii
• Cutaneous, may involve lymhatic vessels or disseminate
• Occurs in horses, cattle, cats and dogs
• Grossly:
  • Ulcerated cutaneous nodules
  • Fistulas may form
• Microscopically:
  • Hard to find ovoid to elongated organisms
  • More numerous in cats
• Exudate may be infectious to humans if comes into contact with wounds