MYCOVIRO - CH 60 PPT part 2

Question 1

Endemic Mycoses

North American Blastomycosis

Answer 1

Blastomyces dermatitidis

Question 2

Endemic Mycoses

Broad based yeast

Answer 2

Blastomyces dermatitidis

Question 3

Endemic Mycoses

Dumb-bell conidia, lollipop conidiophores

Answer 3

Blastomyces dermatitidis

Question 4

Endemic Mycoses

Cave disease, spelunker’s disease

Answer 4

Histoplasma capsulatum

Question 5

Endemic Mycoses

Soil rich in bird or bat guano

Answer 5

Histoplasma capsulatum

Question 6

Endemic Mycoses

Small yeast found inside macrophages

Answer 6

Histoplasma capsulatum

Question 7

Endemic Mycoses

Echinulate macroconidia

Answer 7

Histoplasma capsulatum

Question 8

Endemic Mycoses

Dimorphism is important in confirming ID

Answer 8

Histoplasma capsulatum

Question 9

Endemic Mycoses

San Juaquin Valley Fever

Answer 9

Coccidioides immitis

Question 10

Endemic Mycoses

Dissemination in Filipinos and African Americans

Answer 10

Coccidioides immitis

Question 11

Endemic Mycoses

Direct exam reveal spherules (sputum, lung aspirate)

Answer 11

Coccidioides immitis

Question 12

Endemic Mycoses

Produce arthroconidia separated by disjunctor cells

Answer 12

Coccidioides immitis

Question 13

Endemic Mycoses

South American Blastocycosis

Answer 13

Paracoccidioides brasiliensis

Question 14

Endemic Mycoses

Budding yeasts with multiple buds (mariner’s wheel, mickey mouse cap)

Answer 14

Paracoccidioides brasiliensis

Question 15

Opportunistic Mycoses

- produce pseudohyphae (true hypahe?)

Answer 15

Candida albicans

Question 16

Opportunistic Mycoses

- germ-tube(+)

Answer 16

Candida albicans

Question 17

Opportunistic Mycoses

- carbohydrate assimilation tests to identify other species

Answer 17

Candida albicans

Question 18

Opportunistic Mycoses

- chlamydospores in cornmeal agar

Answer 18

Candida albicans

Question 19

Opportunistic Mycoses

- urease(-)

Answer 19

Candida albicans

Question 20

Opportunistic Mycoses

Monomorphic

Answer 20

Aspergillus spp

Question 21

Opportunistic Mycoses
Found in soil
May produce aflatoxin (hepatotoxin)

Answer 21

Aspergillus spp

Question 22

Opportunistic Mycoses

Identified by the morphology or conidial heads

Answer 22

Aspergillus spp

Question 23

Opportunistic Mycoses

Found in soil especially those with pigeon droppings

Answer 23

Cryptococcus neoformans

Question 24

Opportunistic Mycoses

Urease (+)

Answer 24

Cryptococcus neoformans

Question 25

Opportunistic Mycoses

Mucoid colonies

Answer 25

Cryptococcus neoformans

Question 26

Opportunistic Mycoses

Cryptococcal antigen test (latex agglutination)

Answer 26

Cryptococcus neoformans

Question 27

Opportunistic Mycoses

Encapsulated yeast in India ink preparation

Answer 27

Cryptococcus neoformans

Question 28

Opportunistic Mycoses

Dimorphic

Answer 28

Penicillium marneffei

Question 29

Opportunistic Mycoses

Cutaneous and mucocutaneous infection

Answer 29

Penicillium marneffei

Question 30

Opportunistic Mycoses

Mycelial forms produce brush-like conidiophores (penicillus)

Answer 30

Penicillium marneffei

Question 31

Opportunistic Mycoses

Direct exam reveals annelid formation

Answer 31

Penicillium marneffei

Question 32

Opportunistic Mycoses
Interssticial cell pneumonia in immunocompromised
Previously classified as protozoan

Answer 32

Pneumocystis jiroveci

Question 33

Opportunistic Mycoses

2 forms of Pneumocystis jiroveci

Answer 33

troph and cyst

Question 34

2 forms of Pneumocystis jiroveci

more common but difficult to identify

Answer 34

trophozoite

Question 35

2 forms of Pneumocystis jiroveci

ping-pong balls

Answer 35

cysts