Chronic sino-naso-orbital fungal infection due to Pseudallescheria boydii in a nonimmunocompromised host--a case report.

A case of recurrent sino-naso-orbital fungal infection due to Pseudallescheria boydii described in a 28 yrs. old man, who appeared immunocompetent, and was found negative for HIV I and II by ELISA tested on two occasions. The fungal culture was negative. It is very essential to identify P boydii as Miconazole is the only antifungal drug of choice for this fungus. The pathologist plays an important role in identifying this fungus when fungal culture fails to yield the growth. The pathologist has to look for clinching clues such as "intercalary conidia" and "chlamydoconidia" to distinguish P boydii from Aspergillus.