Dematiaceous molds

Question 1

Tina negra, non inflammed

Answer 1

*A KOH preparation of skin scrapings from a tinea nigra lesion would demonstrate the presence of dark hyphal elements.

Phaeoannellomyces werneckii

produces a beige yeast-like colony which matures into a black velvet-napped mold with a black reverse.

Question 2

Chromoblastomycosis

Answer 2

Chronic disease after inoculation of soils molds

Large wart lesions that look like cauliflower lesions

Cladophialophora (Cladosporium) carrionii

Phialophora verrucosa

two Fonsecaea spp.

Sclerotic bodies are darkly pigmented

Question 3

Associated with chromoblastomycosis

Answer 3

Cladophialophora carrionii

Question 4

Associated with chromoblastomycosis

Answer 4

Fonsecaea spp

this is the rhinocladiella form type

Question 5

Associated with chromoblastomycosis

Answer 5

Phialophora verrucosa

A distinct cup-like collarette forms at the tip of the phialide. Round to oval conidia typically cluster at the tip of the phialide.

Question 6

Phaeohyphomycosis

Answer 6

subcutaneous cysts or diffuse lesions containing darkly-pigmented hyphae

caused by dematiaceous

Question 7

Associated with phaeohyphomycosis

Answer 7

Wangiella dermatitidis

Question 8

Associated with phaeohyphomycosis

Answer 8

Cladophialophora bantiana

Question 9

Associated with phaeohyphomycosis

Answer 9

Phialophora richardsiae

Question 10

Name the mold

Answer 10

Alternaria spp

Question 11

Name the mold

Answer 11

Curvularia spp