Textbook Question
Indicate whether each statement is true or false. If the statement is false, change the underlined word or phrase to make the statement true.
_____ Relapse of fungal diseases is common in AIDS patients.
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Ch. 22 - Pathogenic Fungi
Bauman6th EditionMicrobiology with Diseases by TaxonomyISBN: 9780134832302
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Table of contents
- Ch. 1 - A Brief History of Microbiology31
- Ch. 2 - The Chemistry of Microbiology28
- Ch. 3 - Cell Structure and Function39
- Ch. 4 - Microscopy, Staining, and Classification25
- Ch. 5 - Microbial Metabolism51
- Ch. 6 - Microbial Nutrition and Growth37
- Ch. 7 - Microbial Genetics51
- Ch. 8 - Recombinant DNA Technology21
- Ch. 9 - Controlling Microbial Growth in the Environment36
- Ch. 10 - Controlling Microbial Growth in the Body: Antimicrobial Drugs21
- Ch. 11 - Characterizing and Classifying Prokaryotes29
- Ch. 12 - Characterizing and Classifying Eukaryotes34
- Ch. 13 - Characterizing and Classifying Viruses, Viroids, and Prions23
- Ch. 14 - Infection, Infectious Diseases, and Epidemiology35
- Ch. 15 - Innate Immunity34
- Ch. 16 - Adaptive Immunity21
- Ch. 17 - Immunization and Immune Testing29
- Ch. 18 - Immune Disorders22
- Ch. 19 - Pathogenic Gram-Positive Bacteria25
- Ch. 20 - Pathogenic Gram-Negative Cocci and Bacilli28
- Ch. 21 - Rickettsias, Chlamydias, Spirochetes, and Vibrios25
- Ch. 22 - Pathogenic Fungi47
- Ch. 23 - Parasitic Protozoa, Helminths, and Arthropod Vectors44
- Ch. 24 - Pathogenic DNA Viruses23
- Ch. 25 - Pathogenic RNA Viruses30
- Ch. 26 - Applied and Industrial Microbiology29
- Ch. 27 - Microbial Ecology and Microbiomes22
Bauman6th EditionMicrobiology with Diseases by TaxonomyISBN: 9780134832302Not the one you use?Change textbook
Chapter 22, Problem 9
Which of the following subcutaneous mycoses may exhibit respiratory and cerebral forms?
a. Chromoblastomycosis
b. Mycetoma
c. Phaeohyphomycosis
d. Sporotrichosis
Verified step by step guidance1
Step 1: Understand the nature of subcutaneous mycoses. These are fungal infections that primarily affect the skin and subcutaneous tissues, often entering through trauma. However, some can disseminate to other organs, including the lungs (respiratory) and brain (cerebral).
Step 2: Review each option's typical clinical presentation and potential for dissemination:
- Chromoblastomycosis usually causes chronic skin lesions and rarely spreads to internal organs.
- Mycetoma is characterized by localized swelling and sinus tract formation, primarily affecting skin and underlying tissues, with rare systemic spread.
- Phaeohyphomycosis is caused by dematiaceous (pigmented) fungi and can present as localized subcutaneous infections but is also known to cause disseminated infections, including respiratory and cerebral involvement, especially in immunocompromised patients.
- Sporotrichosis typically presents as lymphocutaneous infection but can disseminate, particularly in immunocompromised individuals, sometimes involving lungs and CNS.
Step 3: Compare the likelihood of respiratory and cerebral forms among these diseases. Both phaeohyphomycosis and sporotrichosis can disseminate, but phaeohyphomycosis is more commonly associated with cerebral involvement.
Step 4: Conclude that the subcutaneous mycosis known for respiratory and cerebral forms is phaeohyphomycosis.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Subcutaneous Mycoses
Subcutaneous mycoses are fungal infections that primarily affect the skin and underlying tissues, usually entering through trauma. They are typically localized but can sometimes disseminate. Understanding their typical clinical presentations helps differentiate among various types.
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Dissemination and Systemic Involvement in Mycoses
Some subcutaneous fungal infections can spread beyond the skin to involve internal organs like the lungs and brain. Recognizing which fungi have the potential for respiratory and cerebral involvement is crucial for diagnosis and treatment.
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Characteristics of Specific Subcutaneous Mycoses
Each subcutaneous mycosis—chromoblastomycosis, mycetoma, phaeohyphomycosis, and sporotrichosis—has distinct features. For example, sporotrichosis can disseminate causing respiratory and cerebral forms, unlike chromoblastomycosis or mycetoma, which are usually localized.
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Related Practice
Textbook Question
Which of the following systemic mycoses is endemic to the deserts of the southwestern
United States?
a. Blastomycosis
b. Coccidioidomycosis
c. Histoplasmosis
d. Paracoccidioidomycosis
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Textbook Question
The term dermatophyte refers to_____.
a. pathogenicity
b. where a fungus grows
c. method of spread
d. pigmentation
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Textbook Question
Ergot alkaloids are produced by some strains of the genus _____ .
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Textbook Question
Indicate whether each statement is true or false. If the statement is false, change the underlined word or phrase to make the statement true.
_____ Almost everyone has allergies to fungal elements.
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Textbook Question
Pneumocystis was once classified as a _____, but now it is classified as a_____.
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