Polyostotic fibrous dysplasia: A case report

Fibrous dysplasia (FD) is a fibro-osseous anomaly, where in normal bone is substituted with fibrous stroma. It is of unknown etiology but recently reported to be associated with mutation in GNAS1 gene (20q13.2) and consists of three subtypes monostotic, polyostotic and craniofacial. Craniofacial FD (CFD) mainly affects the bones of the craniofacial skeletal frame. This article reports a case of a 10 year old boy diagnosed with polyostotic fibrous dysplasia with clinical, radiographical and tissue pathological features.