Test 1 Cutaneous Mycosis- DermatoMYcoses

Question 1

These 2 pathogens most commonly cause Dermatomycoses

Answer 1

Yeasts

and

Normally Saprophytic Filamentous Fungi

Question 2

Which 3 species of fungi and yeast cause Dermatomycoses?

Answer 2

Malasezzia

Trichosporon spp.

Geotricum candidum

Question 3

These lipophilic yeasts are

members of the normal cutaneous flora of animals

and are opportunistic pathogens

Answer 3

Malassezia spp

Question 4

Which species of malassezia

normally reside in the

skin, lips, anus, vagina, anal sacs and external ear canal

of dogs?

Answer 4

M. pachydermatis

Question 5

M. pachydermatis

causes which two afflictions in dogs?

Answer 5

Otitis Externa

and

Seborrhic dermatitis

Question 6

A dog can be predisposed to

Seborrhic Dermatitis cause by M. pachydermatis

if they have what afflictions?

Answer 6

Change in sebum

Increase in moisture

Presence of other dermatoses

Recent antibiotic or glucocorticoid therapy

Trauma

Question 7

In cytological exam, DQ stain of material from a dog showed

shoe-shaped yeasts.

This finding indicates that the dog has

what condition?

Answer 7

Otitis Externa

caused by Malassezia pachydermatis

Question 8

Which dog breeds are predisposed to dermatitis?

Answer 8

Poodles

Cocker Spaniels and Chihuahuas

Terriers

German Shepherds

Boxers and Bassets

Shih-tzus and Shetland Sheepdogs

Question 9

If you see hyperpigmentation, lichenification, with seborrhea,

what does it indicate about the current dermatitis?

Answer 9

The dermatitis is becoming

chronic

Question 10

What is used to treat systemic dermatitis?

Answer 10

Ketoconazole

and daily administration of itraconazole

Question 11

An outbreak of this dermatomycoses causing pathogen occurred in a neonatal ICU

Answer 11

Malassezia pachydermatis

Question 12

Piedra-infection of the hair shaft

is associated with which dermatomycoses

causing pathogen?

Answer 12

Trichosporon beigelii

Question 13

**Trichosporon beigelii **is the cause of

severe outbreaks of ________

in dairy cows

Answer 13

T. begelii

causes severe outbreaks of

MASTITIS

in dairy cows

Question 14

Nasal masses in cats are caused by this dermatomycoses causing pathogen

Answer 14

Nasal masses in cats from

Trichosporon pullalans

Question 15

This is a ubiquitous saprophyte of soil and organic decaying matter

Answer 15

Geotrichum candidum

Question 16

Geotrichosis is common in which species of animal?

Answer 16

Amphibians and Reptiles

Question 17

A cutaneous lesion consisting of

discrete, nodular, well-circumscribed, dermoepidermal masses

is caused by

Answer 17

Geotrichum candidum

Question 18

A 46 year old male developed a crusty lesion on his left temporal scalp with associated alopecia.

He owned a cat, but it never had any skin problems.

Skin and hair samples from the cat were positive for dermatoPHYTES in DTM.

Spindle-shaped macroconidia were seen upon microscopic examination. What is most likely the cause of this man’s affliction?

Answer 18

microsporum canis

Question 19

Several cows on a farm developed alopecia and crusty lesions.

Lesions were everywhere, but mostly on the face and neck.

Samples from the lesions grew on DTM media containing

inositol and thiamine.

What is the dx?

Answer 19

Trichophyton verrucosum