Subcutaneous Mycoses Flashcards Preview

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Flashcards in Subcutaneous Mycoses Deck (44):
1

How are lesions/pathologic effects of subcutaneous mycoses able to spread throughout the body?

Lymphatic channels

2

Resulting lesions of subcutaneous mycoses are all ___ lesions.

Granulomatous

3

Causative agent of Rose gardener's disease

Sporothrix schenkii

4

How do etiologic agents of subcutaneous mycoses enter the body?

Traumatic inoculation

5

false about Sporothrix schenkii
A. branching and septate hyphhae
B. hyphae arranged in flowerlike clusters
C. dimorphic fungus
D. with neuraminidase

B

conidia dapat

6

Which is not a means of entry for Sporothrix schenkii?
A.animal or insect bites
B.splinters
C.contaminated wound dressings
D.sexual contact

D

7

Rose gardener's disease produces lesions usually found at (A) for adults and (B) for kids

(A) lower extremities
(B) face

8

this type of sporotrichosis cases is found in ~75% of cases; it forms sporotrichiotic chancre

lymphocutaneous sporotrichosis

9

in chronic sporotrichosis, what happens to the lymph channels?

become hard and cord-like

10

most reliable way to diagnose S.schenkii

culture (thermal conversion)

11

T or F. Serology is still very helpful in sporotrichosis diagnosis.

F

12

Exophiala jeanselmei
Pseudolescheria boydii
Madurella mycetomatis
Madurella grisea

these cause what specific mycoses?

mycetoma

13

what is mycetoma?

it is interconnecting and it drains sinuses

14

best way to diagnose mycetoma

culture

15

false about Madurella morphology
A. white granules
B. air space
C. club-shaped hyphae

A

black dapat

16

Phialophora verrucosa
Fonsecaea pedrosoi/compacta
Cladosporium carrionii
Rhiniocladiella aquaspersa

All these may cause what specific mycoses?

chromoblastomycosis

17

all EAs of chromoblastomycosis have what color of hyphae?

dematiaceous/dark

18

Pathogenesis of Chromoblastomycosis
1.tissue prolif
2.wartlike lesion
3. ______________

cauliflower nodules

19

sclerotic bodies may be found in what specific mycoses?

chromoblastomycosis

20

Rhiniocladiella aquaspersa & Fonsecaea pedrosoi : type of conidation

acrotheca

21

Which has smaller conidia?
(Fonsecaea pedrosoi/compacta)

Fonsecaea compacta

22

Causative agent of Entomophthoromycosis

Conidiobolus coronatus

23

False about Conidiobolus coronatus
A.slow growing colony
B.zygomycete
C.non-septate hyphae

A

fast dapat

24

Entomophthoromycosis - where does swelling begin?

nasal area

25

in media w/o ____, spherical conidia with numerous branching hyphae are seen. for Conidiobolus coronatus

cyclohexamide

26

common about epidemiology of Lobomycosis,Entomophthoromycosis and Sporotrichosis

more prevalent in males

27

sequelae of germination of sporangiospores in nasal passages; may be caused by Rhizopus

Rhinocerebral mucormycosis

28

Rhinocerebral mucormycosis may lead to what ocular complication?

orbital cellulitis

29

inhalation of sporangiospores may lead to. __

thoracic mucormycosis

30

morphology of mucormycosis EA @ H&E stain

infrequently septate, thin-walled hyphae, with irregular branching

31

causative agent of rhinosporidiosis. Can it be cultured?

Rhinosporidium seeberi
no

32

What is rhinosporidiosis?

chronic granulomatous disease of mucocutaneous tissue.nose: main target

33

Lacazia loboi causes lobomycosis and is cross antigenic with ___

Paracoccidioides brasilienses

34

lesions of lobomycosis resemble what bacterial infection?

leprosy

35

When Lacazia loboi is mounted on Periodic Acid Schiff stain, what can be seen?

yeast cells inside macrophages

36

Which geographic subpopulation has the most number of lobomycosis?

Calabi Indians

37

What do Alternaria and Curvularia cause? (specific type of mycoses)

cause Phaeohyphomycosis

38

False about EAs of Phaeohyphomycosis
A.dematiaceous with aseptate hyphae
B.black fungi in fruits
C.mycelia in morphology

A

with septa

39

Identify causative agent of Phaeohyphomycosis
* macro: yeastlike, with short aerial hyphae
* micro: rocket-shaped mature conidiogenous cells with tapering zones

Exophiala jeanselmei

40

T or F
Exophiala spinifera's optimal temperature for growth is 40 deg C

F
It does not grow at 40 deg C

41

Special medium where Cladophialophora bantiana grows

Potato Dextrose Agar

42

causative agent of cerebral phaeohyphomycosis

Cladophialophora bantiana

43

Enumerate causative agents of SubCT Phycomycosis

Basidiobolus haptosporus
Basidioolus ranarum

44

False about microculture for Basidiobolus haptosporus //
Basidioolus ranarum
A. invaded vasculature
B. branching hyphae with infrequent septa
C. giant cells with multiple granulomata
D. inhibited by cyclohexamide

A

vasculature not invaded