– males in 2nd decade
– posterior spinal elements most commonly involved
– sporadic long bone involvement
Signs & Symptoms:
– long-standing pain localized to affected area
– may cause painful scoliosis (if spine involved)
– variable & nonspecific
– often look like large osteoid osteomas but > 2 cm
– half are radiodense
– irregularly arranged trabeculae of osteoid & woven bone
– quite cellular & vascular
– curettage & grafting
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