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Flashcards in Opportunistic Mycoses Deck (45):
1

only opportunistic fungal species that exhibits thermal dimorphism

Candida albicans

2

Which is false?
A. Diagnosis of opportunistic mycoses does not require high index of suspicion.
B. The lower your host's resistance is, the higher the chances of disease.
C. Anti-neoplastics, TB and AIDS may increase one's chance of getting opportunistic mycoses.

A

3

Candida grows best at __ pH
A.acidic
B.Neutral
C.Alkaline

C

4

Which is not caused by Candida?
A.oral thrush
B.angular cheilitis
C.balanitis
D.fungus balls

D

D c/o aspergillosis
balanitis:candidiasis @ penis

5

identify: typical skin lesions of Candida, especially @ the feet

satellite lesions

6

The ff are adjectives used to describe Candida lesions except
A.whitish
B.erythematous
C.dematiacous
D.none of the above

C

7

What makes C.glabrata unique?
A.no thermal dimorphism
B.no pseudohyphae
C.no yeast cells
D.A and B
E.B and C

D

8

easiest and fastest way of differentiating Candida species

Germ tube formation

9

in CHROMagar media, C.albicans produces culture that is color
A.green
B.pink
C.yellow
D.white

a

10

in CHROMagar media, C.glabrata produces culture that is color
A.green
B.pink
C.yellow
D.white

B

11

Which Candida species produces germ tube

Candida albicans

12

Basidiomycetous yeasts with large polysaccharide
capsules, found in dry pigeon feces or trees @ tropical regions
A.Aspergillus
B.Candida
C.Cryptococcus
D.Rhizopus

C

13

A.whitish mucoid colonies
B.with capsule
C.possess urease
D.with pseudohyphae

false about Cryptococcus

D

14

phenol oxidase, which catalyzes
the formation of melanin from appropriate phenolic
substrates

laccase

15

laccase is found in which Cryptococcus species?

C. neoformans
C. gattii

16

main components of Cryptococcus' capsular polysaccharide

polymannose,xylose and glucuronic acid.

17

Cryptococcus can produce __, which protects it from oxidative killing

melanin

18

False about culture of Cryptococcus
A. Slimy or mucoid colonies
B. Growth is promoted by cycloheximide
C. Can be identified by the detection of urease
D. Brown pigment due to phenol oxidase (or laccase)

B

inhibited dapat

19

main complications of Cryptococcus involves
A.stomach
B.heart
C.lungs
D.all of the above

C

20

The ___ for cryptococcal
antigen is positive in 90% of patients with cryptococcal
meningitis.

The latex slide agglutination test

21

false about Aspergillus
A. Branching, aseptate mycelium
B. Characteristic conidial head
C. Mold form
D. Invades the lungs and other tissues

A

septate dapat

22

most common Aspergillus species that causes disease

Aspergillus fumigatus

23

Which does not have a clavate head?
A. Aspergillus fumigatus
B. Aspergillus niger
C. Aspergillus flavus

B (Globate head kasi)

24

Which does not have smooth conidiophore?
A. Aspergillus fumigatus
B. Aspergillus niger
C. Aspergillus flavus

C (pitted conidiophore kasi)

25

true or false: Aspergillus fumigatus is inhibited by cyclohexamide

True

26

false about Aspergillus fumigatus
A. produces aerial hyphae
B. long conidiophores with terminal vesicles
C. phialides (at vesicles)produce basipetal chains of conidia
D. septated, dichotomous, 90° angle branching hyphae

D

45 degrees dapat

27

allergic bronchopulmonary aspergillosis ensues when the fungus ___

Colonizes the bronchial tree without invading
the lung parenchyma

28

Which does not happen in allergic bronchopulmonary aspergillosis?
A.asthma
B.recurrent chest infiltrates
C.eosinophilia
D.both type I & II hypersensitivity to Aspergillus antigen

D

I and III dapat

29

Aspergillus fumigatus creates ___ when its inhaled conidia enter an existing cavity, germinate, and produce abundant hyphae in the abnormal extrapulmonary spaces.

fungus balls

30

A.Hyphae invade the lumens and walls of the blood
vessels, causing thrombosis, infarction, and necrosis
B. From the lungs, it may spread to the gastrointestinal
tract, kidney, liver, brain, or other organs, producing
abscesses and necrotic lesions

identify the clinical manif caused by Aspergillus fumigatus

invasive aspergillosis

31

Serologic test for circulating cell wall ___ is
diagnostic for aspergillosis

galactomannan

32

in histologic sections, the hyphae of Aspergillus fumigatus are uniform in width and branch at ___ angle
dichotomously

acute

33

Where can surgery be used as treatement?
A.Aspergilloma
B.Allegic Bronchiopulmonary Aspergillosis
C.Extrinsic allergic alveolitis

A

34

For Amphotericin B-resistant strains of A. terreus and
other species including A. flavus and A. lentulus,
__ is used.

Posaconazole

35

Corticosteroids or Disodium Chromoglycate are used in treatment of?
A.Aspergilloma
B.Allegic Bronchiopulmonary Aspergillosis
C.Extrinsic allergic alveolitis

B

36

A)Rhizopus
B)Absidia
C)Cunninghamella
D)Exophiala

Which does not cause mucormycosis?

D

37

identify the clinical manifestation of mucormycosis
A. Results from germination of the sporangiospores in the
nasal passages and invasion of the hyphae into the
blood vessels
B. Patients develop facial edema, bloody nasal exudate, and orbial cellulitis

rhinocerebral mucormycosis

38

morphology of zygomycosis etiologic agents
A. septate with right angle branching
B. aseptate with right angle branching
C. aseptate with acute angle branching
D. septate with acute angle branching

B

39

drug for mucormycosis

amphotericin B,

40

opportunistic fungus that cause pneumonia in AIDS patients

Pneumocystis jiroveci

41

enumerate the two forms of Pneumocystis jiroveci

Thin-walled trophozoites
Thick-walled cysts

42

There probably is P.jiroveci if __ are seen in chest radiography

bilateral infiltrates.

43

Which is not an appropriate stain for micro exam of P.jiroveci?
A.Giemsa
B.Gram
C.methenamine silver
D.calcofluor white

B

44

T or F. Pneumocystis jiroveci can be cultured.

F

45

The only dimorphic penicillium

Penicillium marneffei