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Mycology and Virology > MIDTERMS > Flashcards

MIDTERMS Flashcards

1
Q

SPOROTRICHOSIS CAUSATIVE AGENT

A

Sporothrix schenkii

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2
Q

CHROMOBLASTOMYCOSIS CAUSATIVE AGENT

A

Phialophora verrucosa, Fonsecaea compacta

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3
Q

MYCETOMA CAUSATIVE AGENT

A

Exophiala jeanselmei, Pseudoallescheria boydii

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4
Q

RHINOSPORIDIOSIS CAUSATIVE AGENT

A

Rhinosporidium seeberi

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5
Q

PHAEOHYPHOMYCOSIS CAUSATIVE AGENT

A

Wangiella (Fonsecaea) dermatitidis, Xylohypha bantiana

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6
Q

Soil, vegetable debris, moist wood, wood pulp, & sphagnum moss used to mulch roses and other plants

A

SPOROTRICHOSIS

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7
Q

Soil, wood and wood pulp, decaying vegetation

A

CHROMOBLASTOMYCOSIS

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8
Q

Soil, manure, rotting wood

A

MYCETOMA

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9
Q

Fish, aquatic insects

A

RHINOSPORIDIOSIS

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10
Q

 humans and lower animals
 immunocompromised host

A

PHAEOHYPHOMYCOSIS

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11
Q

chronic mycotic infection of the cutaneous or subcutaneous tissues or adjacent lymphatics

A

SPOROTRICHOSIS

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12
Q

lesions
o nodule
o suppurative or ulcerative = serous, serosanguinous, or purulent fluid
o palpable
o painless

A

SPOROTRICHOSIS

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13
Q

traumatic implantation

A

SPOROTRICHOSIS

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14
Q

inhalation (very rare)

A

SPOROTRICHOSIS

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15
Q

Secondary spread to articular surfaces, bone and muscle is infrequent

A

SPOROTRICHOSIS

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16
Q

occasionally involve the CNS, lungs, or GUT

A

SPOROTRICHOSIS

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17
Q

Other prominent features
o epithelial hyperplasia, fibrosis, and microabscess formation in the epidermis

A

CHROMOBLASTOMYCOSIS

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18
Q

lesions
o nodule or papule
o tumorous
o cauliflower-like appearance (verrucoid & warty crusted nodules)
o painless, itchy

A

CHROMOBLASTOMYCOSIS

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19
Q

chronic, suppurative infection of the subcutaneous tissue

A

MYCETOMA

20
Q

contiguous bone with clinical features fairly uniform regardless of the etiologic agent

A

MYCETOMA

21
Q

lesion:
o nodule
o small hard
o painless
o soften on the surface = viscous, purulent fluid containing grains
o Sinuses = serosanguinous fluid containing the granules

A

MYCETOMA

22
Q

GRAINS – hallmark

A

MYCETOMA

23
Q

Grains vary in size, colorant degree of hardness, depending on the etiologic species

A

MYCETOMA

24
Q

polypoid masses at nasal mucosa, conjunctiva, genitalia, and rectum only microorganism

A

RHINOSPORIDIOSIS

25
Q

classified in the class Mesomycetozoea and is pathogenic to mammals and birds

A

RHINOSPORIDIOSIS

26
Q

caused by a number of dematiaceous fungi where the tissue morphology of the causative organism is mycelial

A

PHAEOHYPHOMYCOSIS

27
Q

Invasion of the skin, lungs, and brain.

A

PHAEOHYPHOMYCOSIS

28
Q

'’most common primary infection → lesion

A

Cutaneous sporotrichosis

29
Q

Primary infection → dissemination to lymphatic channels

A

Lymphocutaneous sporotrichosis

30
Q

follow the same indolent course as the primary lesion

A

Lymphocutaneous sporotrichosis

31
Q

No systemic symptoms

A

Lymphocutaneous sporotrichosis

32
Q

Primary infection → bone (joint) involvement: stiffness and pain in large joint (knee, elbow, ankle, or wrist)

A

Osteoarticular sporotrichosis

33
Q

 Relatively rare
 inhalation of conidia
 hematogenous route
 Hemoptysis → death

A

Pulmonary sporotrichosis

34
Q

Clinical material:  tissue biopsy – best specimen

A
35
Q

Clinical material:  skin scrapings and(or) tissue biopsy

A
36
Q

Clinical material:  tissue biopsy of excised sinus

A
37
Q

Microscopic
 Spherules filled with infected tissue
 cannot be culture in vitro on artificial media

A
38
Q

Macroscopic
 Young colonies appear as yeast like mucoid, shiny and black, while mature colonies appear as velvety but may become glabrous, olive gray to gray black with jet black reverse.

A

Wangiella dermatitidis

39
Q

Microscopic
 Mature cells contains septate hyphae that are branching, greenish brown.

A

Wangiella dermatitidis

40
Q

Microscopic
Phialides : conidiogenous cells that develop laterally or terminally form hyphae.

A

Wangiella dermatitidis

41
Q

Microscopic
Conidia are small, ovoid to globose, unicellular with smooth walls.

A

Wangiella dermatitidis

42
Q

Macroscopic
 Young colonies appear as olive gray to olive brown with a dark gray to black reverse.

A

Xylohypha bantiana

43
Q

Macroscopic
 Mature colonies for obverse & reverse has dark gray or black color, velvety or cottony texture, typically flat.

A

Xylohypha bantiana

44
Q

Microscopic
 Hyphae are septate and maybe branched, broad with brown pigment.

A

Xylohypha bantiana

45
Q

Microscopic
Conidiation is cladosporium type.

A

Xylohypha bantiana

46
Q

Conidia : are long chains (35-40), produce acropetally (produced forth based toward the apex) in a tree like fashion.

A

Xylohypha bantiana

Mycology and Virology (20 decks)

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