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Bipolaris spicifera Causes Fungus Balls of the Sinuses and Triggers Polypoid Chronic Rhinosinusitis in an Immunocompetent Patient

ABSTRACT We report the rare case of a 19-year-old immunocompetent male suffering both from fungus balls of the sinuses and from chronic rhinosinusitis with massive polyposis. Endoscopic sinus surgery revealed grayish brown necrotic masses embedded in viscous eosinophilic mucus. Inoculated onto petri dishes, these masses as well as the mucus grew a dark pigmented fungus, which was identified as Bipolaris spicifera.