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Questions and Answers
Name three agents of chromoblastomycosis mentioned in the text.
Name three agents of chromoblastomycosis mentioned in the text.
Cladophialophora, Phialophora, Fonsecaea
What are the characteristics of eumycotic mycetomas?
What are the characteristics of eumycotic mycetomas?
Eumycotic mycetomas involve Pseudallescheria boydii, Fusarium (Acremonium) falciforme, Madurella spp., and actinomycotic mycetoma. It also includes a description of granules and Cleistothecia containing ascospores.
List three agents of phaeohyphomycosis as mentioned in the text.
List three agents of phaeohyphomycosis as mentioned in the text.
Alternaria, Bipolaris, Curvularia, Exophiala jeanselmei, Exophiala dematitidis, Exserohilum
What is the direct detection method used for diagnosing phaeohyphomycosis?
What is the direct detection method used for diagnosing phaeohyphomycosis?
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Name the species associated with sporotrichosis mentioned in the text.
Name the species associated with sporotrichosis mentioned in the text.
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Which of the following genera is associated with causing eumycotic mycetomas?
Which of the following genera is associated with causing eumycotic mycetomas?
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What is the characteristic feature of Phialophora verrucosa conidia as described in the text?
What is the characteristic feature of Phialophora verrucosa conidia as described in the text?
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Which of the following genera is NOT associated with causing phaeohyphomycosis?
Which of the following genera is NOT associated with causing phaeohyphomycosis?
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What is the method of detection used for diagnosing sporotrichosis as mentioned in the text?
What is the method of detection used for diagnosing sporotrichosis as mentioned in the text?
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Which of the following species is associated with causing chromoblastomycosis?
Which of the following species is associated with causing chromoblastomycosis?
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Which of the following genera is associated with eumycotic mycetomas?
Which of the following genera is associated with eumycotic mycetomas?
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What is the characteristic feature of agents causing chromoblastomycosis?
What is the characteristic feature of agents causing chromoblastomycosis?
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Which of the following is an agent of phaeohyphomycosis?
Which of the following is an agent of phaeohyphomycosis?
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What is the method of direct detection used for diagnosing phaeohyphomycosis?
What is the method of direct detection used for diagnosing phaeohyphomycosis?
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Which species is associated with sporotrichosis as mentioned in the text?
Which species is associated with sporotrichosis as mentioned in the text?
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Study Notes
Chromoblastomycosis Agents
- Agents include Fonsecaea pedrosoi, Cladophialophora carrionii, and Phialophora verrucosa.
- Characteristic feature: Thick-walled sclerotic bodies found in tissues.
Eumycotic Mycetomas
- Caused by fungal infections resulting in granulomatous lesions.
- Characterized by the presence of grains which are aggregates of fungal mycelium and can be either black, white, or yellow.
Phaeohyphomycosis Agents
- Notable agents include Exophiala jeanselmei, Wangiella dermatitidis, and Alternaria species.
- Characteristic feature: Fungi display as brown or dark hyphae and conidia in tissues.
Diagnostic Methods
- Direct detection method for phaeohyphomycosis involves microscopic examination and culture to identify organisms.
- Detection method for sporotrichosis often utilizes culture of the fungus and immunologic tests.
Sporotrichosis Species
- Associated species: Sporothrix schenckii.
Eumycotic Mycetomas Associated Genera
- Genera linked to eumycotic mycetomas include Madurella, Aspergillus, and Curvularia.
Phialophora verrucosa Characteristics
- Conidia appear as sticky, saprophytic yeast-like cells; often in humid conditions.
Non-Associated Genera
- Candida is NOT associated with causing phaeohyphomycosis.
Additional Characteristics
- Agents causing chromoblastomycosis exhibit dematiaceous characteristics (darkly pigmented).
- Scedosporium is an agent of phaeohyphomycosis.
Conidia Detection for Phaeohyphomycosis
- Direct detection involves identifying the presence of dematiaceous hyphae and conidia in tissue samples.
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Description
Test your knowledge of clinically significant species causing subcutaneous mycoses with this mycology and virology midterm quiz. Explore the general characteristics and laboratory diagnosis of Chromoblastomycosis, including the microscopic morphology of fungi such as Cladophialophora, Phialophora, and Fonsecaea.
