Micro: Mycology

Question 1

Microconidia: “tear-drop” shap
Macroconida: “ “pencil-shaped”

Answer 1

T. rubrum/ T. mentagrophytes

Question 2

Bamboo hyphae

Answer 2

M. ferrugineum

Question 3

skin charac. of trichophyton

Answer 3

ring-shaped appearance

Question 4

beaver tails

Answer 4

Epidermophyton floccosum

Question 5

Barrel-shaped thick walled cells

Answer 5

Arthrospores/Arthoconidia

Question 6

“LOLLIPOP conidia”

Answer 6

Blastomycosis/ Gilcrhrist’s Disease/Chicago Disease/ North American Blastomycosis

Question 7

1. Chains of alternate ✅ BARREL-SHAPED ARTHROCONIDIA / ✅ “cob-web” like growth / ✅ rope-like strands/ ✅ racquet forms

Answer 7

Coccidiodomycosis/Cocci/ Desert Fever/Valley fever/ Desert Rheumatism/ “The Bumps”/ San Joaquin Valley Fever/ Posadas Werneckii

Question 7

“MARINER’S WHEEL”’

Answer 7

Almeida’s disease -

Question 8

Spaghetti and meatball appearance

Answer 8

Pityriasis versicolor - Malassezia furfur complex.

Question 8

white-pinkish, granular
and fluffy colonies
 rice medium negative

Answer 8

M. audonii

Question 9

✅ ellipsoidal with blunt/rounded ends

✅ Cinnamon powdery colored colony

Answer 9

M. gypseum

Question 10

Macroconidia: cigar-shaped Microconidia: grape-like cluster

Answer 10

T. mentagrophytes

Question 10

Macroconidia: pencil-shaped Microconidia: tear-drop

Answer 10

T. rubrum

Question 11

Chlamydoconidia: balloon-shaped

Answer 11

T. concentricum

Question 12

Macroconidia: balloon-shaped Microconidia: club-shaped, tear- drop

Answer 12

T. tonsurans

Question 13

Macroconidia: ✅Rat-tail Microconidia: large tear-drop, pyriform

Answer 13

T. verrucosum

Question 14

Macroconidia: club-shaped in pairs

Answer 14

E. flocossum

Question 14

• Infection that involves the skin and subcutaneous tissue
• Habitat: soil

Answer 14

SUBCUTANEOUS MYCOSES

Question 15

Rose Gardener’s Disease - Sporotrichosis; causes redness, swelling & open ulcers at puncture sites, cigar-shaped yeasts in pus

Answer 15

Sporothrix schenkii

Question 16

granulomatous sinus lesion of the foot

Answer 16

Pseudoallescheria boydii

Question 17

Lobomycosis – small and hard nodules appearing on the extremities

Answer 17

Loboa loboi

Question 18

Rhinosporidiosis – formation of tumor-like polyp on the nose

Answer 18

Rhinosporidium seeberi

Question 19

long chain (branching)

Answer 19

Cladosporium carrionii

Question 20

keloid-like subcutaneous nodule involving extremities, tissue form: multiple budding cells

Answer 20

Loboa loboi

Question 21

✅ San Joaquin Valley Fever ✅ Desert Fever ✅ Mold: barrel-shaped arthroconidia ✅ Yeast: spherule with endospores

Answer 21

Coccidioides immitis

Question 22

✅ Normal flora: skin, mucous membrane, GIT ✅ Produce yeast and hyphae in vivo ✅ Screening: Germ tube: forms at 35’C ✅Confirmatory: Chlamydospore: Corn Meal Tween 80 Agar

Answer 22

C. albicans

Question 23

ochratoxin is produced by

Answer 23

Aspergillus ochraceus

Question 24

Gliotoxin is produced by

Answer 24

Aspergillus fumigatus

Question 26

most common lab contaminant

Answer 26

saprophytic fungi

Question 27

Side note: ✅ C. tropicalis = infection on immunocompromised host ✅ C. krusei = hematological disorders ✅ C. parapsilosis = endocarditis ✅ C. dubliniensis = double conidia

Answer 27

🐈

Question 28

Sickle or canoe shaped, multiseptate macroconidia

Answer 28

Fusarium

Question 29

Resemble C. neoformans Encapsulated To differentiate: Rhodotorula = pink colonies

Answer 29

Rhodotorula

Question 30

Also known as "Darling's Disease"

Answer 30

Histoplasmosis

Question 31

"Darling's Disease" causative agents - inhalation of bird droppings

Answer 31

- Histoplasma capsulatum - Emmonsiella capsulata

Question 32

smallest yeast cell

Answer 32

Histoplasma capsulatum

Question 33

Young culture usually have a predominance of smooth walled MACROCONIDIA that become TUBERCULATE with age

Answer 33

Histoplasmosis

Question 34

INTRACELLULAR YEAST CELLS"

Answer 34

Histoplasmosis

Question 35

AKA: * Desert fever * Valley fever * Desert Rheumatism * The Bumps ✅* San Joaquin Valley Fever * PosadasWerneckii

Answer 35

Blastomycosis

Question 36

Chronic granulomatous disease of skin, mucous membrane, lymph nodes and internal organs

Answer 36

Blastomycosis

Question 37

"prickly state" on medium with blood

Answer 37

Blastomycosis

Question 38

cigar shaped

Answer 38

sporotrichosis

Question 39

Also called as Verrucous dermatitis - Warty cutaneous nodules which resembles ✅flouts of cauliflower

Answer 39

CHROMOBLASTOMYCOSIS

Question 40

Called sclerotic bodies, medlar bodies, ✅copper-pennies bodies or muriform cells

Answer 40

CHROMOBLASTOMYCOSIS

Question 41

Also caused by dematiaceous (pigmented) fungi

Answer 41

PHAEOHYPHOMYCOSIS

Question 42

Club-shaped

Answer 42

Trichophyton tonsurans

Question 43

“Birds on fence”

Answer 43

T. rubrum

Question 44

Fungus ball (Aspergilloma)

Answer 44

Aspergillosis

Question 45

Necrotizing disease of the lungs

Answer 45

Granulomatous Aspergillosis

Question 46

most often seen in clinical laboratory

Answer 46

Aspergillus fumigatus

Question 47

causes onychomycosis

Answer 47

Aspergillus flavus

Question 48

major cause of otomycosis

Answer 48

Aspergillus niger

Question 49

Common among diabetics, pregnant woman and those on birth control pills

Answer 49

Mycotic Vulvovaginitis (Candidiasis)

Question 50

sausage appearance

Answer 50

Systemic Candidiasis

Question 51

CONFIRMATORY TEST for candida

Answer 51

GERM TUBE TEST

Question 52

Rhizoids originates between sporangiophores

Answer 52

Absidia spp.

Question 53

Also called as Torulosis or European Blastomycosis -- bird droppings (excreta of pigeons)

Answer 53

Cryptococcosis

Question 53

sexual stage of Cryptococcus neoformans

Answer 53

Filobasidiella

Question 53

Single unbranched tube-like phialides, ”conidia in clusters” at the ✅ tip of phialides

Answer 53

A. Acremonium spp.

Question 54

“brush-like conidiophores”

Answer 54

B. Penicillium spp.

Question 55

“Sickle or Boat–shaped macroconidia”

Answer 55

C. Fusarium spp.

Question 56

“Penicillium – like” structure

Answer 56

C. Scopulariosis

Question 57

* Chains of large brown conidia resembling ✅ “drumstick”

Answer 57

A. Alternaria spp.

Question 58

“shield cells”

Answer 58

B. Cladosporium spp.