Cholesteatoma is relatively common in the middle ear cavity, but it can rarely be seen in paranasal sinuses and it is a published case of Cholesteatoma within the Concha Bullosa in English literature, to the best of our knowledge.
An 81-year-old Caucasian woman was established, nasal obstruction, headache and diplopia complain. TRANS-nasal was preferred to endoscopic approach for endoscopic and radiological assessment. The diagnosis of Cholesteatoma was founded by histopathological evaluation of mass within the Concha Bullosa.
Although it happens rarely, Cholesteatoma should be considered in the differential diagnosis of slow growing and destructive sinuses masses.
