Difference between revisions of "Malassezia pachydermidis"
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**Organisms are usually present- minimum 3-5 yeasts per high-power field must be found to imply cause of disease | **Organisms are usually present- minimum 3-5 yeasts per high-power field must be found to imply cause of disease | ||
| − | *''Malassezia pachydermis'' in [[ | + | *''Malassezia pachydermis'' in [[Malassezia Dermatitis|malassezia dermatitis]][[Category:Yeast-like_Fungi]] |
[[Category:To_Do_-_Fungi]] | [[Category:To_Do_-_Fungi]] | ||
Revision as of 11:27, 30 June 2010
- Normally present in oily areas on the external ear canal and skin in dogs
- Some strains have been recovered from the ear canal of cats
- Bottle-shaped, small budding cells, non-mycelial
- Gram stain shows purple yeast cells with a very wide base
- Grows on Sabouraud's Dextrose agar in 2 weeks of incubation at room temperature
- Greenish discolouration on blood agar
- Clinical disease may cause yeast to proliferate and cause infection
- Grossly:
- Regional lesions: muzzle, ears, interdigital, perianal
- Or generalised disease
- Erythematous, hyperpigmented, lichenified and scaly lesions with alopecia
- Microscopically:
- hyperkeratosis, parakeratosis
- Spongiotic pustular dermatitis
- Acanthosis
- Organisms are usually present- minimum 3-5 yeasts per high-power field must be found to imply cause of disease
- Malassezia pachydermis in malassezia dermatitis