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An osteosarcoma (OS) or osteogenic sarcoma (OGS) (or simply bone cancer) is a cancerous tumor in a bone. Specifically, it is an aggressive malignant neoplasm that arises from primitive transformed cells of mesenchymal origin (and thus a sarcoma) and that exhibits osteoblastic differentiation and produces malignant osteoid.Osteosarcoma is the most common histological form of primary bone sarcoma. It is most prevalent in teenagers and young adults.

Many patients first complain of pain that may be worse ...