Aneurysmal hone cyst is rare in paranasal sinuses. It may be uni or multilocutar It occurs alone or with other benign bone
lesions. The exact pathogenesis of it is still unknown. The aggressiveness of the disease needs early diagnosis and proper
management to prevent recurrence. This report describes a case of aneurysmal bone cyst involving the ethmoid and maxillary
sinuses which was successfully managed.
Key words Aneurysmal bone cyst - Paranasal sinuses