osteosarcoma

n. cancer of the bones

Osteosarcoma is the most common type of malignant bone cancer, accounting for 35% of primary bone malignancies. There is a preference for the metaphyseal region of tubular long bones. 50% of cases occur around the knee. It is a malignant connective (soft) tissue tumor whose neoplastic cells present osteoblastic differentiation and form tumoral bone.
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Osteosarcoma /os·teo·sar·co·ma/ a malignant primary neoplasm of bone composed of a malignant connective tissue stroma with evidence of malignant [more]Osteosarcoma - Community and Resources

Noun
1. malignant bone tumor; most common in children and young adults where it tends to affect the femur
(synonym) osteogenic sarcoma
(hypernym) sarcoma

n. osteosarcoma, cancer of the bones