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Radiology Forum
April 2000

Quiz Case 1

Arch Otolaryngol Head Neck Surg. 2000;126(4):552. doi:

Periosteal osteosarcoma is a rare subtype of osteosarcoma with chondroblastic differentiation. Eleven cases of PO were present among more than 5000 primary bone tumors on file at the Mayo Clinic, Rochester, Minn.1 The peak incidence is in the second decade of life. The male-female ratio is 1.0:1.7. Osteosarcoma of the jaw represents a small proportion of all osteosarcomas. Osteosarcoma occurs most frequently in the long bones of adolescents and young adults during the period of maximal growth. The most frequently involved bone is the tibia, followed by the femur.1 Ten percent or fewer of osteosarcomas occur in the head and neck.2-4

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