Difference between revisions of "Malassezia pachydermidis"
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(Created page with 'thumb|right|150px|''Malassezia pachydermidis'' - Copyright Professor Andrew N. Rycroft, BSc, PHD, C. Biol.F.I.Biol., FRCPath *Normally pres…') |
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*''Malassezia pachydermis'' in [[Mycotic skin infections - Pathology#Malassezia dermatitis|malassezia dermatitis]][[Category:Yeast-like_Fungi]] | *''Malassezia pachydermis'' in [[Mycotic skin infections - Pathology#Malassezia dermatitis|malassezia dermatitis]][[Category:Yeast-like_Fungi]] | ||
| + | [[Category:To_Do_-_Fungi]] | ||
Revision as of 11:30, 25 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