Mould Identification: A Virtual Self Assessment
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Unknown 23 = Aspergillus terreus
|A 29 year old male with a past history of pulmonary tuberculosis presented with general fatigue, tiredness, weight loss, a productive cough, especially at night, and numbness in his fingertips and toes. A chest X ray and a computed tomography(CT) scan showed the presence of a "fungal ball" in the right and left apical regions. A Grocott’s methenamine silver (GMS) stained tissue section of lung showed fungal balls of hyphae and the fungus shown below was isolated.|
A Grocott’s methenamine silver (GMS) stained tissue section of lung showed fungal balls of hyphae.
Colonies of A. terreus are typically suede-like and cinnamon-buff to sand brown in color with a yellow to deep dirty brown reverse.
Conidial heads are compact, columnar (up to 500 x 30-50 um in diameter) and biseriate. Conidiophores are hyaline and smooth-walled. Conidia are globose to ellipsoidal (1.5-2.5 um in diameter), hyaline to slightly yellow and smooth-walled.
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