Osteosarcoma, Juxtacortical

**Definition:** A form of osteogenic sarcoma of relatively low malignancy, probably arising from the periosteum and initially involving cortical bone and adjacent connective tissue. It occurs in middle-aged as well as young adults and most commonly affects the lower part of the femoral shaft. (Stedman, 25th ed)

**Tree numbers:** - C04.557.450.565.575.650.655 - C04.557.450.795.620.655