Mould Identification: A Virtual Self Assessment
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Unknown 28 = Coniochaeta hoffmannii
|A 44-year-old HIV+ man on antiretroviral therapy presented with chronic sinusitis. A CT scan revealed extensive erosive pansinusitis. An antral washing was performed and hyphal elements were observed on direct microscopy and the culture shown below was grown.|
|Direct Microscopy (PAS)|
Periodic Acid-Schiff (PAS) stained smear showing septate hyphal elements.
Colonies are flat, smooth, moist, pink to orange, with regular and sharp margin; reverse pink.
Hyphae are narrow, hyaline, producing conidia laterally from small collarettes directly on the hyphae, or from lateral cells which are sometimes arranged in dense groups; lateral cells flask-shaped or nearly cylindrical. Conidia are hyaline, smooth- and thin-walled, broadly ellipsoidal to cylindrical or allantoid, produced in slimy heads
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