[Fibrous dysplasia involving sphenoid and occipital bone: one case report and literature review].

OBJECTIVE: To study the clinical manifestation, radiograph features, pathology, diagnosis and treatment of fibrous dysplasia in cranial bone.
METHOD: A case of fibrous dysplasia involving sphenoid and occipital is reported and literature were reviewed. RESULT: The most common complaint were headache, proptosis, diplopia, or visual changes. Distinguishing features of fibrous dysplasia on CT include "ground-glass" appearance, bone fiber anisotrophy, aneurysmal bone cyst formation and thickness of the cranial cortices. Fibrous dysplasia could be exactly diagnosed by pathology. Computed tomography was also a choice for diagnosis.
CONCLUSION: Fibrous dysplasia involving the cranial bone can present in myriad ways. Modern imaging modalities and histopathologic analysis is required to make accurate diagnosis. Surgery, particularly in a challenging region such as sphenoid and occipital bone, should preserve the existing function for the patients with functional impairment or a cosmetic deformity.