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Mould Identification: A Virtual Self Assessment

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Unknown 48 = Verruconis gallopava.

Case History
A 69-year-old lady presented with anosmia and imaging revealed extra-axial mass arising from the cribriform plate, extending superiorly into the left frontal lobe. A stealth-guided endoscopic biopsy showed extensive inflammation and necrosis of brain tissue with microabscess formation and multiple granulomata, with occasional fungal elements.  The culture below was isolated.
Culture
Culture

Colonies of Verruconis gallopava are smooth to suede-like, dry, flat, tobacco-brown to brownish-black with a dark brown diffusible pigment. Optimum growth at 35C, tolerant to 40C. RG-2 organism
Microscopy
Microscopy

Microscopic view

Hyphae are brown with relatively thick walls. Conidiophores are mostly cylindrical to acicular, sometimes poorly differentiated, bearing a few conidia at the tip. Conidia are two-celled, subhyaline to pale brown, smooth-walled to verrucose, cylindrical to clavate, constricted at the septum, 11-18 x 2.5-4.5 µm in size, with the apical cell wider than the basal cell. A remnant of a denticle may also be seen at the conidial base.
Comment: Verruconis gallopava is a well recognised species and has been reported as an avian pathogen, especially in poultry.  Occasional human infections have also been reported.

About Verruconis Back to Virtual Assessment

What is your identification?

Verruconis gallopava
Rhinocladiella atrovirens
Myrmecridium schulzeri
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School of Biological Sciences
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THE UNIVERSITY OF ADELAIDE
SA 5005 AUSTRALIA

Contact

Dr David Ellis
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