SUPERFICIAL MYCOSES

Question 1

hyper pigmented or hypo pigmented macular lesions that scale readily

pityriasis versicolor

skin

skin scrapings, spaghetti and meatballs appearance

Answer 1

malassezia furfur

Question 2

grey to black, well demarcated, macular lesions most frequently occurring on the palms of the hand or soles of the feet

tinea nigra

skin

SAB yielding brown to black pigment, dimorphic with hyphae

Answer 2

Hortae werneckii

Question 3

hard, gritty brown to black concretions that develop along the hair shaft

black piedra

hair

direct macroscopic exam with cultures yielding asexual phase of the fungus

Answer 3

Piedrasa hortae

Question 4

soft, white to creamy yellow granules that form a sleeve like collarette along the hair shaft

white piedra

hair

direct macroscopic exam with culture of SAB with dimorphic hyphae, arthroconidia, and blastoconidia

Answer 4

trichosporon beigeii

Question 5

name the superficial fungi responsible for this infection:

White Piedra

Answer 5

Trichosporon beigelii

Question 6

name the superficial fungi responsible for this infection:

Black Piedra

Answer 6

Piedraia hortae

Question 7

for epidermophyton

Macroconidia?
Microconidia?

Answer 7

smooth walled borne in clusters of two or three

absent

Question 8

for Microsporum

Macroconidia?
Microconidia?

Answer 8

numerous large thick and rough walled

rare

Question 9

for Trichophyton

Macroconidia?
Microconidia?

Answer 9

rare, smooth thin walled

numerous, spherical