Unknown 66

Mould identification: a virtual self assessment

Case history

A 59 year-old man with acute lymphoblastic leukaemia presented with a new cough, chest x-ray demonstrated a cavity in the left upper lobe.  Direct examination of biopsy tissue revealed abundant filamentous hyphae and all cultures grew the fungus shown below.

Unknown 66 direct microscopy

Direct microscopy

Unknown 66 culture

Culture: 24 hours growth

Unknown 66 microscopy


What is your identification?