An unusual variant of Trichophyton tonsurans var. sulfureum.
A fungus, recovered from a skin lesion of a patient, produced velvety to powdery, white to deep yellow colonies on Sabouraud glucose agar. Microscopically, it produced a large number of cylindric, smooth-walled, three- to eight-celled macroconidia but failed to produce microconidia on a variety of nutritional media such as rice grains, cornmeal dextrose, potato dextrose, Sabouraud glucose, oatmeal and lactrimel agars. It hydrolysed urea in 7 days, perforated hair in vitro and required thiamine for growth. This isolate represents an atypical variant of Trichophyton tonsurans var. sufureum subvar. perforans.
Padhye
A A
AA
Emerging Bacterial and Mycotic Diseases Branch, Centers for Disease Control and Prevention, Atlanta, Georgia 30333.
Weitzman
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I
Domenech
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E
D003470:Culture Media / Q000737:chemistry; D003881:Dermatomycoses / Q000382:microbiology*; D006801:Humans; D014249:Trichophyton / Q000145:classification* / Q000166:cytology / Q000302:isolation & purification
D003470:Culture Media