Read the following information in the Orthopedic Consult note. "Mr. Samuels has a 4-month history of increasing pain in his right distal femur. 1. He first noticed pain after being kicked in the leg at a soccer game and was evaluated 3 weeks later for persistent pain. 2. There was a soft tissue mass in his distal femur that was tender to touch. 3. An x-ray was performed to rule out a fracture or chronic osteomyelitis. 4. The x-ray showed both osteolysis of the metaphysis and periosteal new bone formation." 5. According to the note, all of the following statements are true EXCEPT