6 Flashcards
The most common species frequently isolated from immunocompromised patients are
Candida species,
Aspergillus species,
Mucor species
Artificial heart valves can be colonized by a variety of infectious agents, including
Candida species
Immunocompromised patients are at risk for
Systemic Invasive Aspergillosis
Candidiasis
Cryptococcal meningitis
Rhinocerebral/Horacic mucormycosis
Acquired through inhalation of spores
Aspergillosis
Common laboratory contaminant
Aspergillosis
Clinical forms:
The fungus grows in the bronchial tree
Aspergillosis
Most common form of pulmonary aspergillosis
Fungus ball
Fungus taken residence in an old lung cavity which are usually the result of old TB lesions
Fungus ball of Aspergillosis
Most often seen in clinical laboratory
Aspergillus fumigatus
Causes oncomycosis
Aspergillus oncomycosis
Major cause of otomycosis
Aspergillus niger
Most common cause of fungal sinusitis
Bipolaris spp.
Curvularia spp
Exserohilum spp
Alternaria spp
Most common fungi of allergic bronchopulmonary mycosis (ABPM)
Bipolaris spp
Curvularia spp
Clinical formation of candidiasis:
a disease of the oral mucous membrane
hallmark: formulation of white creamy patches (pure cultures of fungus)
Thrush
Clinical formation of candidiasis:
stimulates ringworm infection
Nail infection (Paronychia)
Clinical formation of candidiasis:
Common among diabetics, pregnant women and those on birth control pills
Mycotic Volvuvaginitis
A systemic disease caused by a number of closely isolated fungi belonging to class phycomycetes
Zygomysis/Phycomysis/Mucormysis
3 genera of mucormysis
Rhizopus
Mucor
Absidia
Zygomysis/Phycomysis/Mucormysis:
no rhizoids or stolons
Mucor spp
Zygomysis/Phycomysis/Mucormysis
unbranched sporangiophores with rhizoids where stolon arises
Rhizopus spp
Zygomysis/Phycomysis/Mucormysis
Rhizoids originated between sporangiophores
Absidia spp
Acute/chronic pulmonary or meningeal mycosis
Cryptococcosis
Transmitted through inhalation of spores from bird droppings (excreta of pigeons)
Cryptococcosis
Etiologic agent of cryptococci’s
Cryptococcus neoformans
Filobasidiella neoformans
Single unbranched tube-like phialides, “conidia in clusters” at the tip of phialides
Acremonium spp
“Brush-like conidiophores”
B. Pencillium
“Sickle or Boat - shaped macroconidia”
C. fusarium spp
Conidiophore “Penicillium-like” structure
Scopulariosis
Chains of large brown conidia resembling “drumstick”
Alternaria spp
Single celled conidia resembling “shield cells”
Cladosporium spp
Large multiseptate elongated conidia “zigzag” appearance
Dreschlera (Helminthosporium)
