Difference between revisions of "Sporotrichosis"

From WikiVet English
Jump to navigation Jump to search
 
 
(7 intermediate revisions by 3 users not shown)
Line 1: Line 1:
−
[[Image:Sporotrichosis horse.jpg|thumb|right|150px|Sporotrichosis in a horse -Copyright Professor Andrew N. Rycroft, BSc, PHD, C. Biol.F.I.Biol., FRCPath]]
+
*Caused by [[Sporothrix schenckii|''Sporothrix schenckii'']]
−
[[Image:Sporotrichosis cigar cells.jpg|thumb|right|150px|Sporotrichosis cigar shaped cells -Copyright Professor Andrew N. Rycroft, BSc, PHD, C. Biol.F.I.Biol., FRCPath]]
+
*Cutaneous, may involve lymhatic vessels or disseminate
−
*''Sporothrix schenckii''
+
*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
  
−
*Occurs in soil, wood and vegetation
+
==Test yourself with the Subcutaneous Mycoses Flashcards==
−
**Saprophyte of both decaying and healthy vegetation
 
  
−
*Worldwide
+
[[Subcutaneous_Mycoses_-_Flashcards#Sporotrichosis|Sporotrichosis Flashcards]]
  
−
*Exogenous infections through wounds
 
  
−
*Sporadic infections
+
[[Category:Subcutaneous Mycoses]][[Category:To Do - Fungi]]
−
 
 
−
*Non-contageous
 
−
 
 
−
*Causes subcutaneous nodules or granulomas
 
−
**Nodules ulcerate discharging pus
 
−
 
 
−
*Spread via the [[Lymphatic System - Anatomy & Physiology|lymphatics]]
 
−
 
 
−
*The [[Bones and Cartilage - Anatomy & Physiology|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
 
−
**Can be confused with [[Subcutaneous Mycoses#Epizootic Lymphangitis|epizootic lymphangitis]] in horses
 
−
 
 
−
*Single cell, cigar shaped
 
−
**Usually found within [[Neutrophils - WikiBlood|neutrophils]]
 
−
**Yeast cell clusters with peripheral eosinophilic rays can be seen in tissue sections
 
−
 
 
−
*Stained using PAS, Gram stain (positive), 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
 
−
 
 
−
*Potassium iodide treatment orally
 
−
**[[Antifungal Drugs#Flucytosine|5-fluorocytosine]] and [[Antifungal Drugs#Polyene Antifungals|amphotericin B]] can also be used[[Category:Subcutaneous_Mycoses]]
 

Latest revision as of 14:18, 22 February 2011

  • 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

Test yourself with the Subcutaneous Mycoses Flashcards

Sporotrichosis Flashcards

Retrieved from "https://en.wikivet.net/index.php?title=Sporotrichosis&oldid=108834"