Mould Identification: A Virtual Self Assessment
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Unknown = Trichophyton concentricum
|A immigrant from Papua New Guninea presented with several chronic non-inflamatory skin lesions on his back. The fungus shown below was isolated.|
Chronic non-inflammatory lesions in inhabitants of Papua New Guinea caused by T. concentricum showing characteristic concentrically arranged imbricated rings of scaling.
Culture of T. concentricum on mycobiotic agar showing a slow growing, glabrous, deeply folded thallus ranging from cream to deep orange-brown in colour. Reverse is buff to brown in colour.
Typical "balloon-shaped' chlamydoconidia of T. concentricum. Microscopic morphology of T. concentricum consists of broad, much-branched, irregular hyphae, which may have "antler" tips resembling T. schoenleinii. Chlamydoconidia are often present in older cultures. RG-2 organism.
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