Fungi According to Types of Mycoses (Superficial and Cutaneous) Flashcards

1
Q

Cream-colored, wrinkled colonies on SDA @ RT in 5 days

A

Trichosporon beigelii

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2
Q

Lyophilic, Wood’s Light (+)

Creamy, yeastlike colonies on SDA with olive oil (2-4 days @ 30*C)

A

Malassezia furfur

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3
Q

Spaghetti and meatballs appearance

A

Malassezia furfur

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4
Q

Former name and other name of Exophiala werneckii

A

Former: Cladosporium werneckii
Other: Phaeoannellomyces werneckii

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5
Q

Black, yeasty colonies with olive-green mycelium on SDA @ RT

A

Exophiala werneckii

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6
Q
Rough-walled macroconidia:
• thick-walled
• spindle-shaped
• large and multiseptated
• curved tip and knobby projections

Sparse microconidia:
• clavate, smooth-walled
• laterally attached to hyphae

A

Microsporum canis

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7
Q

Black piedra

hard, brown-black crusts on outside of hair shaft

A

Piedraia hortae

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8
Q

Cigar-shaped macroconidia:
• numerous
• thick-walled, multi-septates
• spiny surfaces and rounded tips

Sparse microconidia:
• clavate, smooth-walled

A

Microsporum gypseum

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9
Q

White piedra

Light brown, soft nodules on beard or mustache

A

Trichosporon beigelii

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10
Q

Hyaline hyphae, blastoconidia and arthrospores (when grown on Cornmeal-Tween 80 Agar)

A

Trichosporon beigelii

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11
Q

Tinea capitis (gray-patch ringworm)
Tinea corporis
Anthrophilic
Wood’s light (+)

A

Microsporum audouinii

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12
Q

Tinea nigra palmaris (tropical infection involving palms of hand – black to brown scaly patches)

A

Exophiala werneckii

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13
Q

Tight clusters of spherical, yeastlike cells with hyphal fragments

A

Malassezia furfur

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14
Q

Rare macroconidia:
• thin-walled, smooth, cigar-shaped

Microspores:
• numerous, small, globose in grapelike clusters

Coiled, spiral hyphae

A

Trichophyton mentagrophytes

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15
Q

Fluffy or granular, white to pink colonies

Reverse: cherry-red or wine-red on Cornmeal Agar

A

Trichophyton rubrum

Clue: Ruby (red) = Rubrum

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16
Q

Tinea capitis (gray-patch ringworm)
Tinea corporis
Zoophilic
Wood’s light (+)

A

Microsporum canis

18
Q

Requires thiamine

A

Trichophyton tonsurans

19
Q
Tinea capitis
Tinea corporis
Tinea unguium
Geophilic
Wood's light (-)
A

Microsporum gypseum

20
Q

White to buff, granular or cottony surface with bright yellow periphery

Reverse: bright-yellow or yellow-orange

A

Microsporum canis

Clue: Canary (yellow) = Canis

22
Q

Tinea corporis, tinea pedis

Anthrophilic

A

Epidermophyton floccosum

23
Q

Abundant microconidia:
• tear-, club-, balloon-shaped

Rare macroconidia:
• smooth-walled and cylindrical

A

Trichophyton tonsurans

24
Q

Green-black, heaped colonies on SDA @ RT

A

Piedraia hortae

24
Q

Bizarre-shaped macroconidia:
• thick-walled, club- or spindle-shaped
• multiseptate
• rough surface

Rare microconidia

Terminal chlamydospores

A

Microsporum audouinii

25
Q

Cream, tan, buff or light brown, flat, velvety colonies

Reverse: salmon-pink or orange brown

A

Microsporum audouinii

25
Q

White to tan colonies
Flat, suede-like texture with folded center

Yellow, mustard-yellow or khaki-green (age*)

Reverse: yellow-brown or dark-orange with folds

A

Epidermophyton floccosum

28
Q
Tinea capitis (black-dot ringworm)
Tinea corporis, tinea pedis, tinea unguium
A

Trichophyton tonsurans

29
Q

Tinea versicolor or Pityriasis versicolor

A

Malassezia furfur

30
Q
Tinea capitis (inflammatory/ectothrix infections)
Tinea corporis, tinea pedis, tinea unguium
A

Trichophyton mentagrophytes

31
Q

Urease (+) in 48 hours

Hair-baiting test (+)

A

Trichophyton mentagrophytes

32
Q

Tinea capitis, tinea corporis, tinea unguium
Urease (-) or rarely (+)
Hair-baiting test (+)

A

Trichophyton rubrum

33
Q

Dark, thick-walled hyphae with swellings

Septated and has ascospores

A

Piedraia hortae

33
Q

Club-shaped macroconidia:
• numerous
• smooth-walled
• 2-4 cells in singles; 3-4 cells in clusters

Absent microconidia

A

Epidermophyton floccosum

34
Q

Flat, powdery, granular, cream, tan, yellow-rose or rust-colored colonies; heaped or sunken with folds

Reverse: yellow to tan

A

Trichophyton tonsurans

35
Q

Tear-shaped microconidia:
• born laterally from long strands of hyphae

Pencil-shaped microconidia:
• rare, thin-walled and smooth

A

Trichophyton rubrum

36
Q

Dark, one to two-celled blastoconidia

A

Exophiala werneckii

36
Q

Flat, tan to brown or cinnamon-brown, granular or powdery colony

Reverse: rose-brown, red-brown, cinnamon

A

Microsporum gypseum

36
Q

White or tan to pink, velvety and fluffy or granular and flat colonies

Reverse: white, rose or red-brown

A

Trichophyton mentagrophytes