Blastomyces Dermatitidis With Large Yeast Forms

Document Type

Article

Publication Date

5-22-2001

Description

Yeast forms of Blastomyces dermatitidis typically range from 8 to 20 μm in largest diameter. We report a rare case of primary pulmonary blastomycosis with an unusual morphology, in which we found significant numbers of large yeast forms ranging from 30 to 35 μm in diameter. To our knowledge, this is only the second reported case of giant forms of B dermatitidis. We also review the literature and discuss the possible association of this unusual morphology with immunosuppression in general and glucocorticoid use in particular.

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