FIBROUS DYSPLASIA

HALLMARK FEATURES:
      • Sclerotic margin
      • Ground glass matrix
      • Proximal femur

Skull and ribs other common locations
Well demarcated
Medullary, central
Other more mature matrix changes may be present with thick trabeculations
deformity more common with polyostotic form

NON OSSIFYING FIBROMA

HALLMARK FEATURES:
      • Sclerotic margin
      • Eccentric - cortically based
      • Incidental finding