Fibrous dysplasia of the clivus and sphenoid sinus.

Fibrous dysplasia is a primary disease of bone that may lead to bony distortion, expansion, and weakness. Craniofacial involvement is an important entity for physicians to be aware of because of the potential for impingement on neurovascular structures, intracranial extension, and cosmetic deformity. We report two cases of craniofacial fibrous dysplasia and discuss the clinical presentation, radiographic and histologic findings, and the management of affected patients.