A Case of Cholesterol Granuloma in the Nasal Septum

Cholesterol granuloma is a rare disease in which cholesterol crystals act as a foreign substance in the surrounding tissues and cause granulomatous reactions and fibrosis. It is commonly found in the mastoid or petrous apex, but the involvement of the nasal septum is very rare. Mucocele, which has pathogenesis similar to that of cholesterol granuloma, is a relatively common cystic lesion of the paranasal sinus; but rarely, it also occurs in the nasal septum. We report a case of cholesterol granuloma, which was clinically thought of as mucocele at first but managed successfully by endoscope-assisted marsupialization.