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Mould Identification: A Virtual Self Assessment

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Unknown 37 = Curvularia lunata

Case History
A 40-year-old man presented with a low-grade delayed postoperative inflammation in the right eye. A large corneal infiltrate developed after aspiration of the mass. Treatment with systemic, topical, and intraocular antifungal agents cleared the vitreous, but the cornea perforated.  The fungus shown below was grown.
Culture

Colonies are fast growing, suede-like to downy, brown to blackish brown with a black reverse.
Microscopy

Conidia are pale brown, with three or more transverse septa (phragmoconidia) and are formed apically through a pore (poroconidia) in a sympodially elongating geniculate conidiophore similar to Drechslera. Conidia are cylindrical or slightly curved, with one of the central cells being larger and darker. Germination is bipolar and some species may have a prominent hilum.  RG-1 organism.
Comment: The genus Curvularia contains about 80 species which are mostly soil or plant pathogens. Several species have been recovered from human infections, principally from cases of mycotic keratitis.

About Curvularia Back to Virtual Assessment

What is your identification?

Bipolaris australiensis
Curvularia lunata
Exserohilum rostratum

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Dr David Ellis
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