Fibrous dysplasia in the frontoethmoidal complex: diagnosis and surgical aspects.

Fibrous dysplasia of the paranasal sinuses is rare and often presents a diagnostic challenge. We describe 3 cases of fibrous dysplasia and ossifying fibroma involving the paranasal sinuses. After introduction of the term fibrous dysplasia into the literature in 1938 by Lichtenstein, many authors accepted fibrous dysplasia and ossifying fibroma as one and the same entity. In more recent years most investigators have considered the two lesions as separate and distinct clinical entities. A brief update of the clinical aspects, radiographic appearance, diagnosis and management of craniofacial fibro-osseous lesions is provided.