Abstract
Paracoccidioidomycosis (PCM) is a fungal infection caused by Paracoccidioides brasiliensis and P. lutzii. It is endemic to South and Central America. While PCM frequently remains latent, the disease can reactivate years after the initial infection. As the disease is rare outside the endemic area, and symptoms can mimic other pulmonary diseases, correct diagnosis can be challenging for clinicians in developed countries. In this report, we present the case of a 57-year-old female Venezuelan immigrant with PCM. She was initially misdiagnosed with sarcoidosis and treated with corticosteroids, leading to an exacerbation of the infection requiring intensive care. Because cultivation of Paracoccidioides sp. is slow and unsensitive, we opted for microscopic observation of fungal elements and molecular testing on a tissue biopsy and bronchoalveolar lavage (BAL) together with antibody detection. This allowed the diagnosis of PCM, enabling specific management. PCM and other imported mycoses should be considered as a differential diagnosis in patients originating from South and Central America displaying symptoms suggestive of sarcoidosis. The reviews of this paper are available via the supplemental material section.