Osteosarcoma |
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| Osteogenic Sarcoma; Osteogenic Sarcomas; Osteosarcomas; Sarcomas, Osteogenic | |
| A sarcoma originating in bone-forming cells, affecting the ends of long bones. It is the most common and most malignant of sarcomas of the bones, and occurs chiefly among 10- to 25-year-old youths. (From Stedman, 25th ed) | |