Fibrous dysplasia (ill defined)


  • Idiopathic replacement of bone with fibrous tissue.
  • It can affect just one bone (monostotic) or multiple bones (polyostotic). Jaw involvement is common (especially the maxilla).
  • Adolescents.
  • Clinical signs and symptoms: Painless, slow and progressive enlargement of the affected bone.
  • Radiodensity: Initially ill-defined radiolucency, gradually fine trabeculae become evident to produce the typical ground glass or orange peel appearance.

Differential diagnosis


Fibrous dysplasia