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FUNGI



Chromoblastomycosis

Chromomycosis

Epizootic Lymphangitis

Eumycotic Mycetoma

Hyphomycosis

Pythiosis

  • Mycotic swamp fever

Rhinosporidiosis

Sporotrichosis

  • Sporothrix schenckii
  • Occurs in soil, wood and vegetation
  • Worldwide
  • Exogenous infections through wounds
  • Causes subcutaneous nodules or granulomas
    • Nodules ulcerate discharging pus
  • Spread via the lymphatics
  • The bones and viscera can be involved which terminates in mortality
    • This is rare
    • Reported in dogs and horses
  • Affects dogs, horses, cats, monkeys, mules, camels, donkeys, cattle, fowl and rodents
    • Most commonly seen in horses as an ascending lymphocutaneous infection of the legs
  • Single cell, cigar shaped
    • Usually found within neutrophils
    • Yeast cell clusters with peripheral eosinophilic rays can be seen in tissue sections
  • Stained using PAS, fluorescent antibody and Calcofluor White
  • Latex agglutination and immunodiffusion serology can be performed
  • Grows on Blood agar and Sabouraud's Dextrose agar in one to three weeks
  • At 37°C:
    • Colonies are smooth, cream to tan coloured and soft
    • No mycelium can be seen
  • At 25°C to 27°C:
    • Colonies turn from white and soft to tan to brown to black
    • Leathery, wrinkled and coarse
    • Mycelium can be seen as branching septate hyphae
    • Conidiospores can also be seen

Further Links