Blastomycosis is an uncommon, endemic fungal infection in parts of the United States and Canada caused by a dimorphic fungus called Blastomyces dermatitidis. B dermatitidis can involve many different organ systems. Various benign pulmonary conditions have been reported to mimic malignant pulmonary nodules on PET scans, but PET-positive pulmonary blastomycosis has not been described in the literature.
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Cite this: Pulmonary Blastomycosis Masquerading as Metastatic Disease in the Lung: A Case Report - Medscape - Jan 31, 2006.