the Fibrous Dysplasia  is  a  benign  bone  disease , of  slow growth and  unknown  etiology . The  involvement  of  the  craniofacial  skeleton  is  not uncommo  and  generally , produces  facial  asymmetries . There are three type  of  disease :  Monostotic  fibrous dysplasia , that  involves  only  one  bone  and  Polyostotic  involving multiple bones and McCune – Albright syndrome  . The surgical treatment remains as the main therapeutic approach and the postoperative follow–up is necessary due  to its  recurrent  nature.