Mould Identification: A Virtual Self Assessment
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Unknown 4 = Biploris australiensis
|A 40 year old man presented with a history of nasal polyps and chronic sinustis and headaches. Imaging showed pansinusitis and opacification of the paranasal sinuses. A sinus tissue biopsy grew the fungus shown below.|
Cultures of B. australiensis on Sabouraud's dextrose agar are rapid growing, flat, spreading, suede-like to downy and are grey to blacklish-brown.
Microscopic morphology of B. australiensis showing sympodial development of darkly pigmented, multicellular conidia (phragmoconidia) on a geniculate or zig-zag rachis. Conidia are fusiform to ellipsoidal, germinating only from the ends (bipolar). The genera Bipolaris, Curvularia and Exserohilum are all closely related.
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