Opportunistic Mycosis

Question 1

Most frequently encountered opportunistic mycosis

Answer 1

Candidiasis

Question 2

Candida spp. is a normal microbiota of ___.

Answer 2

Oropharynx
GI tract
skin
genitourinary tract

Question 3

Most common etiologic agent of candidiasis

Answer 3

Candida albicans

Question 4

Antigenic structures of Candida spp.

Answer 4

Proteases
Enolase
Heat shock proteins

Question 5

Manifestations of cutaneous Candidiasis

Answer 5

Intertrigo
Chronic Candida Onychomycosis
Paronychia

Question 6

Specimen used for diagnosing Candidiasis

Answer 6

Skin and nail scrapings
Tissue samples
Body fluids

Question 7

What agar is used to differenciate Candida spp.?

Answer 7

Chromagar

Question 8

Agar used to allow conidiation of Candida

Answer 8

Cornmeal Agar with Tween80

Question 9

Microscopic appearance of Candida albicans

Answer 9

Budding yeast
Pseudohypae

Question 10

Screening test for Candidiasis

Answer 10

Germ tube

Question 11

Common causative agent of Cryptococcosis

Answer 11

Cryptococcus neoformans

Question 12

Alternative agar used for culturing Cryptococcus

Answer 12

Birdseed agar

Question 13

New way of testing for Cryptococcosis

Answer 13

Latex agglutination

Question 14

Colony appearance of Cryptococcus neoformans

Answer 14

Yeastlike, mucoid, cream to brown

Question 15

The most prevalent systemic mycosis

Answer 15

Candidiasis

Question 16

Thrush is a manifestation of what mycosis?

Answer 16

Candidiasis

Question 17

Treatment for Candidiasis with thrush

Answer 17

Topical nyastatin
Oral ketoconazole or fluconazole

Question 18

Capsular polysaccharide present in Cryptococcus neoformans

Answer 18

Glucoronoxylomannan (GXM)

Question 19

Modified true or false:

Cryptococcus yeasts can get into the CNS and cause meningoencephalitis

Answer 19

True

Question 20

Candida albicans apearance on CHROMagar

Mauve
Pink & fuzzy
Metallic blue w/ pink halo
Green-blue

Answer 20

Green-blue

Question 21

Candida tropicalis apearance on CHROMagar

Mauve
Pink & fuzzy
Metallic blue w/ pink halo
Green-blue

Answer 21

Metallic blue w/ pink halo

Question 22

Candida krusei apearance on CHROMagar

Mauve
Pink & fuzzy
Metallic blue w/ pink halo
Green-blue

Answer 22

Mauve

Question 23

Major clinical manifestation of Cryptococcosis

Answer 23

Fungal meningitis, resembling brain tumor

Question 24

Is it feasible to use CSF as a specimen in culturing Cryptococcus?

Answer 24

Yes

Question 25

Serological test for Cryptoccocosis

Answer 25

GXM test

Question 26

Most common causative agent of Aspergillosis

Answer 26

Aspergillus fumigatus

Question 27

Appearance of conidiophores produced by the Aspergillus spp.

Answer 27

Long conidiophores w/ terminal vesicles Phailides produce basipetal chains of conidia

Question 28

Microscopic morphology of Aspergillus

Answer 28

Hyaline, septate hyphae

Question 29

What are the two parts of the conidiophore of Aspergillus?

Answer 29

Stripe (stem) Vesicle

Question 30

What is the type of Aspergillus that has metulae and phialides?

Answer 30

Biseriate

Question 31

Which species of Aspergillus has a blue-green-colored mold? A. fumigatus A. niger A. terreus A. flavus

Answer 31

A. fumigatus

Question 32

Which species of Aspergillus has a sandy brown or cinnamon buff mold? A. fumigatus A. niger A. terreus A. flavus

Answer 32

A. terreus

Question 33

Mold appearance of A. niger Blue-green Dark-brown Yellow-green Sandy-brown

Answer 33

Dark-brown

Question 34

Mold appearance of A. flavus Blue-green Dark-brown Yellow-green Sandy-brown

Answer 34

Yellow-green

Question 35

This produces the most potent mycotoxin called _____, which frequently contaminates peanuts, corn, grains, and other foods [2 answers]

Answer 35

Aspergillus flavus Aflatoxin

Question 36

What species of Aspergillus is uniquely uniseriate?

Answer 36

A. fumigatus

Question 37

Allergic forms of Aspergillosis

Answer 37

Allergic bronchopulmonary Aspergillosis Extrinsic allergic alveolitis

Question 38

What are the causative agents of mucormycosis?

Answer 38

Rhizopus Rhizomucor Mucor Lichtheimia Cunninghamella

Question 39

What is the most prevalent agent of Mucormycosis?

Answer 39

Rhizopus oryzae

Question 40

Major clinical form of Mucormycosis

Answer 40

Rhinocerebral Mucormycosis

Question 41

The characteristic microscopic finding of Rhizopus spp. is the presence of ______.

Answer 41

Rhizoids