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Table 2 Specific radiological features dependent on body site [10]

From: Best practice management guidelines for fibrous dysplasia/McCune-Albright syndrome: a consensus statement from the FD/MAS international consortium

BoneFeatures
Pelvis and ribs• Fibrous dysplasia is the most common cause of a benign expansile lesion of a rib.
• Expansile lytic lesion
• Fusiform enlargement of the rib
• Minor calcifications within the lesion may be seen
Extremities• Bowing deformity, in particular of the large weight-bearing bones (e.g. shepherds crook deformity of the proximal
• femur)
• Looser zones
• Co-existent precocious puberty may lead to premature fusion of growth plates resulting in short stature
Skull and craniofacial bones• Bone expansion showing ground-glass appearance
• Calvarial deformity resulting in exophthalmos