Radiographic

Osteoporosis circumscripta in skull

Flame-shaped lesions in long bones

Osteolytic lesions near thickened lesions

Sclerotic bone

Bowed limbs

Fractures, including “banana” or “chalk” transverse fractures

Bone scintigraphy

Areas of increased uptake of technetium-99m

“Mouse face” pattern on scan of affected vertebra