Fibrous Dysplasia

  • Etiology: focal arrest in normal osteoblastic activity secondary resulting in presence of all components of normal bone with lack of normal differentiation into their mature structures
  • Imaging: affects femur / tibia / ribs / facial bones (frontal bossing), lucent / ground glass lesion in marrow with sclerotic rim, bowing of weight bearing lines, shepherds crook deformity of femur
  • Clinical: 80% monostotic

Cases of Fibrous Dysplasia