Prelim Exams Flashcards
Not a normal flora and is exogenous
Zygomycetes
Morphological classification of fungi that causes majority of mycoses.
Deuteromycota
Aerial mycelia with terminal chlamydospores causing tinea capitis.
Fluoresces in Wood’s light.(green)
Mircrosporum audouinii
Characteristic bright yellow rim with curved tips with rare microconidia. ; this causes what?
Microsporum canis; tinea capitis and tinea corporis
Microconidia are absent. Clubshaped.
Epidermophyton floccosum
Opportunistic mycoses causing KERATITIS AND CORNEAL ULCER.
Fusarium
Parallel chains of conidia, present within the areal part of the fungus
Steirigmata
Aspergillus species are differentiated in:
Colonial morphology
Aspergillus fumigatus - blue green
Aspergillus terreus - tan to cinnamon
Aspergillus niger- black
Aspergillus flavus- yellow green to yellow
Fonsacea pedrosoi, distinct characteristics.
1-3 conidia
Very slow growing
Primary chains of conidia
With secondary and tertiary chains of conidia.
Causes Chromoblastomycosis.
Not a predisposing factor for opportunistic mycoses.
Choices:
Viral infection during childhood; boosts the immune system
Distinct characteristic of C. Albicans.
Germtube positive. ( no constrictions)
A Candida species commonly causing Endocarditis.
Candida parasilopsis
Sporangiophore location( different from the rest) arise between the nodes
A. Absidia
Domeshaped, swollen sporangiophores.
Columella
Presence of sclerotic bodies upon tissue biopsy
Chromoblastomycosis
Endemic systemic mycosis present in south east asia, particularly China, harbored by bamboo rats.
Penicillium marneffei
Rhodotorula
Urease positive and inositol negative.
Needs an olive oil overlay
Malassezia furfur.
Seen in reticuloendothelial cells. Attacking macrophages.
Histoplasma capsulatum
What is common for candidiasis, cryptococcosis and sporotrichosis?
The all have yeast forms, blastoconidia(budding cells)
Which of the following is a not characteristic of histoplasmosis?
➡️ Yeast phase
➡️ Mycelial phase
➡️ Endemic in a specific geographic distribution
➡️ Is an intracellular mycosis
➡️ Person to person transmission
Person to person transmission.
Correctly describes mycetoma
Diagnosis should not be done if no sulfur granules are present
Develops resistance to amphotericin B.
C. Parasilopsis
Scientific name of baker’s yeast.
Saccharomyces cerevisae
Sample collections
Histoplasma; __________
Aspergillus; ____________
Cryptococcus; __________
T. Metangrophytes; _________
Sputum
Ear discharge
CSF
Skin scrapings from feet infected with athlete’s foot.
Cornmeal agar morphologies
Log in a stream;
Clysters with no chlamydospores;
Spiders;
Numerous chlamydospores;
Hockey sticks;
C. Pseudotropicalis C. Tropicalis C. Parasilopsis C. Albicans Geotrichum
