Abstract
Actinomycosis of paranasal sinus is a very rare disease that is caused by infection of Actinomyces species that were present in oral or nasal flora due to trauma or dental treatment. Actinomycosis shows a local calcified lesion associated with soft tissue density on computed tomography, which is similar to fungal sinusitis. Actinomycosis associated with fungal ball due to Asper-gillus affecting sinus ventilation has been rarely reported. We experienced two cases of actinomycosis associated with fungal ball and successfully treated with endoscopic sinus surgery and oral antibiotics for 3 months without recurrence.
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