• Elena G Caldito, Oyintayo Ajiboye, Estefania Flores, Camila Antia, and Patricia Demarais.
• Department of Medicine, Cook County Health and Hospital System, Chicago, IL, USA.
• IDCases. 2020 Jan 1; 20: e00812.

AbstractCutaneous blastomycosis is the most common extrapulmonary manifestation of disseminated blastomycosis, a disease caused by Blastomyces dermatitidis, a dimorphic fungus endemic of North America. Initially, the organism enters the respiratory system by inhalation of the infectious conidia and produces an acute pulmonary infection that may eventually disseminate if it is left untreated. Blastomycosis may represent a diagnostic challenge and its definitive diagnosis requires direct visualization of the distinctive yeast or a positive fungal culture. The objective of this case report is to highlight the importance of the skin exam and tissue biopsy in the diagnosis of blastomycosis. We present a previously healthy patient with chronic pneumonia, evaluated at Pulmonary clinic with non-diagnostic thoracentesis and bronchoscopy, found to have disseminated blastomycosis after biopsy of a scalp lesion in Dermatology clinic.

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