Nasal Septum Actinomycosis Mimicking Mucocele.

Actinomycosis commonly occurs in the cervicofacial region, but rarely in the paranasal sinus. The authors report an unusual case of nasal septum actinomycosis that was mistaken for a mucocele. The patient was treated accordingly using antibiotic therapy after endoscopic sinus surgery was performed. It is noteworthy that actinomycosis of the nasal septum could appear as a mucocele without central calcification or bony destruction in imaging studies.