Mycology Part 3

Question 1

What are the endemic fungi?

Answer 1

Blastomycosis, Coccidiodomycosis, Histoplasmosis

Question 2

Discuss Blastomycosis

Answer 2

1. Yeast form is the only yeast with broad-based budding.
2. Recreational contact with soil; Aerosolized conidia.
3. Pulmonary symptoms

Question 3

Discuss Coccidiodomycosis

Answer 3

1. Caused by coccidiodes immitis
2. Great imitator
3. Found in desert regions/ Southwestern USA
4. Inhalation of arthroconidia

Question 4

Discuss Histoplasmosis

Answer 4

1. Yeast cells are intracellular and uninucleated
2. Associated with caves
3. Skin and bone lesions
4. NO Capsule
5. Yeast persist in macrophages

Question 5

What are the opportunistic fungi?

Answer 5

Candida albicans, Cryptococcosis, Aspergillus

Question 6

Discuss Candida albicans

Answer 6

Normal to mouth, vagina and GI tract

1. Causes thrush
2. Phenotypic Switching to avoid immune system.

Question 7

Discuss Cryptococcocus neoformans

Answer 7

1. Systemic mycosis
2. Pigeon droppings
3. Meningitis, Meningoencephalitis

Question 8

Discuess Aspergillus Fumigatus

Answer 8

1. Consistent inhalation

2. Extrapulmonary hematogenous dissemination because of propensity for angioinvasion.