Isolated Pulmonary Emergomycosis in an Immunocompetent Patient in Alberta, Canada

Open Forum Infect Dis. 2022 Feb 14;9(3):ofac021. doi: 10.1093/ofid/ofac021. eCollection 2022 Mar.

Abstract

Emergomyces canadensis pulmonary infection was incidentally diagnosed in an asymptomatic patient suspected to have metastatic osteosarcoma. Molecular diagnosis was imperative to fungal identification given overlapping histopathological features with histoplasmosis. This report documents a case of isolated pulmonary emergomycosis in an otherwise immunocompetent patient while discussing diagnostic and management pitfalls of this emerging and underdiagnosed infection.

Keywords: Emergomyces; Histoplasma; granuloma; thermally dimorphic.