Unknown 23

Mould identification: a virtual self assessment

Case history

A 29 year old male with a past history of treated 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.

Unknown 23 direct microscopy

Direct microscopy

Unknown 23 culture


Unknown 23 microscopy


What is your identification?