X-ray
Mixed bone lesion with osteoblastic predominance in the middle and distal third of the right femur, with an osteolytic component with imprecise limits in the proximal third, extending to the level of the small femoral trochanter. There is cortical disruption and aggressive multilamellar periosteal reaction ("onion skin"), "sunburst" reaction, Codman triangle, and bone formation at adjacent soft tissues.