Unusual cutaneous manifestations of disseminated Cryptococcus gattii infection in an immunocompetent host

Abstract

We report a rare case of disseminated Cryptococcus gattii species complex (CGSC) infection in a 51-year-old immunocompetent man who initially had extensive ulcerated skin nodules, an uncommon cutaneous manifestation of cryptococcosis. Positron emission tomography/computed tomography (PET/CT) revealed hypermetabolic lesions in the skin and lungs, while brain magnetic resonance imaging (MRI) demonstrated multiple cryptococcomas with mass effect. The diagnosis was confirmed by skin and lung biopsies and a positive serum cryptococcal antigen test. Induction therapy with lipid complex amphotericin B, flucytosine, and corticosteroids was initiated. This case highlights the importance of recognizing atypical cutaneous lesions as potential indicators of disseminated CGSC infection in immunocompetent individuals, and underscores the need for early antifungal management.