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Mycology
Microbiology
| Question | Answer |
|---|---|
| Dimorphic fungi | Histoplasma capsulatum; Blastomyces dermatiditis; Sporothrix schenckii; Coccidioides immitis (also C. posadasii); Paracoccidioides brasiliensis; Penicillium marneffei |
| Yeasts | Candida albicans; Candida spp; Torulopsis glabrata; Cryptococcus neoformans; Pneumocystsis carinii |
| Molds | Zygomycetes (nonseptate): Mucor, Rhizopus; Dermatophytic agents: Trichophyton, Malasezzia; Dematiaceous fungi: Alternaria, Cladosporium; Opportunistic fungi: Aspergillus, PenicilliumDimorphic fungi |
| Fungi mechanismsof dz | metabolic toxicity (ingest); hypersensitivity; host colonization with subsequent disease |
| Opportunistic mycoses | Candida spp; Cryptococcus neoformans; Aspergillus spp; Zygomycetes; Fusarium et al; Pneumocystis jiroveci |
| Infect immunocompetent AND immunocompromised | Cryptococcus neoformans |
| Most common cause of meningitis in HIV & PG | Cryptococcus neoformans |
| Zygomycetes (nonseptate) | Mucor, Rhizopus |
| Dermatophytic agents | Trichophyton, Malasezzia |
| Dematiaceous fungi | Alternaria, Cladosporium |
| Opportunistic fungi | Aspergillus, Penicillium |
| Dermatophytic agents | Trichophyton, Malasezzia |
| nail infxn example of what level of tissue invasion by fungi? | Cutaneous |
| Which dimorphic fungi to suspect in immunocompetent people? | Blasto |
| Superficial mycoses causing hypigmentation | M. furfur |
| Ringworm | dermatophytes (2 phytons & microsporum) |
| More common in tropical | M furfur; subcutaneous |
| Immunocompromised pt | Histo, coccidioides, Candida, Aspergillus (direct tissue invasion) |
| Olive oil; tinea versicolor; spaghetti & meatballs; pseudohyphae | M. furfur |
| Systemic fungal infxn originate usually in the ____ | Lung (but can disseminate) |
| colonizes human airway | Aspergillus (in immunocomp pt can cause direct tissue invasion) |
| conidia bind to human fibrinogen; problems for neutropenic pt | Aspergillus |
| most common opportunistic fungi | Candida spp |
| invades deep tissues of multiple organs | Candida spp |
| can make pseudohyphae | M. furfur; candida spp |
| Encapsulated yeast; CNS; meningitis | Cryptococcus neoformans |
| Example of nonpigmented (hyaline) mold | fusarium |
| Diagnosis by bronchial lavage (OR); silver stain | pneumocystis |
| subcutaneous | Sporo; Chromoblastomycosis; Mycetoma |
| lesions develop along lymphatic | sporo |
| lesions often pathognomonic | systemic mycoses |