Fungi According to Types of Mycoses (Superficial and Cutaneous)

Question 1

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

Answer 1

Trichosporon beigelii

Question 2

Lyophilic, Wood’s Light (+)

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

Answer 2

Malassezia furfur

Question 3

Spaghetti and meatballs appearance

Answer 3

Malassezia furfur

Question 4

Former name and other name of Exophiala werneckii

Answer 4

Former: Cladosporium werneckii
Other: Phaeoannellomyces werneckii

Question 5

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

Answer 5

Exophiala werneckii

Question 6

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

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

Answer 6

Microsporum canis

Question 7

Black piedra

hard, brown-black crusts on outside of hair shaft

Answer 7

Piedraia hortae

Question 8

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

Sparse microconidia:
• clavate, smooth-walled

Answer 8

Microsporum gypseum

Question 9

White piedra

Light brown, soft nodules on beard or mustache

Answer 9

Trichosporon beigelii

Question 10

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

Answer 10

Trichosporon beigelii

Question 11

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

Answer 11

Microsporum audouinii

Question 12

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

Answer 12

Exophiala werneckii

Question 13

Tight clusters of spherical, yeastlike cells with hyphal fragments

Answer 13

Malassezia furfur

Question 14

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

Microspores:
• numerous, small, globose in grapelike clusters

Coiled, spiral hyphae

Answer 14

Trichophyton mentagrophytes

Question 15

Fluffy or granular, white to pink colonies

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

Answer 15

Trichophyton rubrum

Clue: Ruby (red) = Rubrum

Question 16

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

Answer 16

Microsporum canis

Question 18

Requires thiamine

Answer 18

Trichophyton tonsurans

Question 19

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

Answer 19

Microsporum gypseum

Question 20

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

Reverse: bright-yellow or yellow-orange

Answer 20

Microsporum canis

Clue: Canary (yellow) = Canis

Question 22

Tinea corporis, tinea pedis

Anthrophilic

Answer 22

Epidermophyton floccosum

Question 23

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

Rare macroconidia:
• smooth-walled and cylindrical

Answer 23

Trichophyton tonsurans

Question 24

Green-black, heaped colonies on SDA @ RT

Answer 24

Piedraia hortae

Question 24

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

Rare microconidia

Terminal chlamydospores

Answer 24

Microsporum audouinii

Question 25

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

Reverse: salmon-pink or orange brown

Answer 25

Microsporum audouinii

Question 25

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

Answer 25

Epidermophyton floccosum

Question 28

``` Tinea capitis (black-dot ringworm) Tinea corporis, tinea pedis, tinea unguium ```

Answer 28

Trichophyton tonsurans

Question 29

Tinea versicolor or Pityriasis versicolor

Answer 29

Malassezia furfur

Question 30

``` Tinea capitis (inflammatory/ectothrix infections) Tinea corporis, tinea pedis, tinea unguium ```

Answer 30

Trichophyton mentagrophytes

Question 31

Urease (+) in 48 hours | Hair-baiting test (+)

Answer 31

Trichophyton mentagrophytes

Question 32

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

Answer 32

Trichophyton rubrum

Question 33

Dark, thick-walled hyphae with swellings Septated and has ascospores

Answer 33

Piedraia hortae

Question 33

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

Answer 33

Epidermophyton floccosum

Question 34

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

Answer 34

Trichophyton tonsurans

Question 35

Tear-shaped microconidia: • born laterally from long strands of hyphae Pencil-shaped microconidia: • rare, thin-walled and smooth

Answer 35

Trichophyton rubrum

Question 36

Dark, one to two-celled blastoconidia

Answer 36

Exophiala werneckii

Question 36

Flat, tan to brown or cinnamon-brown, granular or powdery colony Reverse: rose-brown, red-brown, cinnamon

Answer 36

Microsporum gypseum

Question 36

White or tan to pink, velvety and fluffy or granular and flat colonies Reverse: white, rose or red-brown

Answer 36

Trichophyton mentagrophytes