Craniofacial fibrous dysplasia with aneurysmal bone cyst: A rare coexistence

Fibrous dysplasia (FD) is a developmental anomaly in which the normal bone marrow replaced by fibro-osseous tissue. can affect either single (monostotic) or multiple (polyostotic) bones. Craniofacial FD monostotic involving craniofacial However, CFD one of rare forms FD. Aneurysmal cyst (ABC) non-neoplastic lesion. ABCs are expansile lytic lesions composed numerous blood-filled channels and cystic spaces that mostly involve long bones vertebrae occur rarely as primary bony lesion secondary to various pre-existing benign malignant tumors like fibrous dysplasia. Concomitant occurrence ABC with only few cases reported literature. Here, we report on case 24-year-old woman who had presented right frontal facial swelling for over 6 years followed proptosis eye. Computed tomography revealed an peripheral ground glass densities body greater wing sphenoid, lateral wall orbit, squamous part temporal associated thinning rarefaction walls. Further, MRI same patient some them showing fluid-fluid levels within.