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16 Cards in this Set
- Front
- Back
Sportothrix schenckii
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Rose thorns or sphagnum moss
dimorphic yeast: oval or eliptical with single bud (cigar shaped) Mold forms are "daisy like" rash with lymphatic streaking can disseminate and go to lungs and brain. |
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Paracoccidioides brasiliensis
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resides in soil causes pulmonary infection or sin
mostly south america dimorphic yeast forme (infective) marner's wheel (similar to histo mold form) mold form spherical conida derived from septate hyphae. |
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Dimorphic fungi
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slow growing
deep seated mycosis yeast at 37 (body) mold at 30 prickly stage (in between) blasto, cocci, histo, sporothrix, and paracocci |
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Dematiaceous fungi
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dark (front and back)
mostly rapid growing (except those that cause mycetoma and chromomycosis) May be subdivided by septa: longitudinal and transverse transvers only single cell or other alternaria, ulocaldum, stemphylium, epicoccum, bipolaris, drechslera, curvularia, exserohilum nigrospora, phoma, chaetomium |
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mycetoma
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infection of the subcutaenous tissue producing mass with draining sinus.
Dx. feature is sulfur granule 98%: atypical bacteria (nocardia and streptomysis) 2% fungal |
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chromomycosis
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infection of the skin my dematiaceous hypahal elements
dx: medlar bodies or copper pennies |
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Causes of chromomycosis and mycetoma
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slow growing dematiaceous fungi
cladosporium, xylohypha, phialophora verrucosa and richardsiae, fonsecaea , exophiala, wangiella Differ based on conidia |
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Types of sporulation seen in chromomycosis and mycetoma causing dematiaceous fungus
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cladosporium type: long branching chains with dark staining joiners
phialophora type: urn shaped conidiophores with spherical conidia loose at tip acrotheca type: short chains of eliptical conidia from eands of conidiophores (coat rack) Rhinocladiella type: single eliptical conidia directily from sides of hyphae. pg1215 |
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Lid lifters
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Zygomyces: rhizopus, absidia, and mucor
grow fast (24 hours) and raise lids |
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How to tell difference between rhizopus and absidia
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rhizoid beneath sporangiophores in rhizopus and from hypahe between the condiophores in absidia
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Preparation of tissue with possible zygomycetes.
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Do not grind
Just mince and place whole tissue on plate (hyphae will break and die) |
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Aspergillus fumigatus
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most common
blue-green or green-brown and cottony single row of phialides which chains of conidia |
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Aspergillus flavus
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yellow-green or yellow brown
daisy-petal like arrangemnt of chains of conida from a single or double row of phialides circumphrentially around central vesicle. |
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Aspergillus niger
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peppered effect with black on top and buff on reverse
black conidia cover entire surface Look like dandylion puff |
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Aspergillus terreus
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orange brown
looks alot like fumigatus but shorter conidia |
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Penicillium marneffi
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systemic infection
red-wine pigment in agar look like brushes |