Bone Tumor: Primary


Several different kinds of tumors can grow in bones: primary bone tumors, which form from bone tissue and can be malignant (cancerous) or benign (not cancerous), and metastatic tumors (tumors that develop from cancer cells that formed elsewhere in the body and then spread to the bone). Malignant primary bone tumors (primary bone cancers) are less common than benign primary bone tumors. Both types of primary bone tumors may grow and compress healthy bone tissue, but benign tumors usually do not spread or destroy bone tissue and are rarely a threat to life.

Primary bone cancers are included in the broader category of cancers called sarcomas. Primary bone cancer is rare. It accounts for much less than 1% of all new cancers diagnosed. In 2018, an estimated 3,450 new cases of primary bone cancer will be diagnosed in the United States.

Cancer that metastasizes (spreads) to the bones from other parts of the body is called metastatic (or secondary) bone cancer and is referred to by the organ or tissue in which it began-for example, as breast cancer that has metastasized to the bone. In adults, cancerous tumors that have metastasized to the bone are much more common than primary bone cancer.

Different types of primary bone cancer


Osteosarcoma arises from bone-forming cells called osteoblasts in osteoid tissue (immature bone tissue). This tumor typically occurs in the arm near the shoulder and in the leg near the knee in children, adolescents, and young adults but can occur in any bone, especially in older adults. It often grows quickly and spreads to other parts of the body, including the lungs. Risk of osteosarcoma is highest among children and adolescents ages 10 and 19. Males are more likely than females to develop osteosarcoma.



Chondrosarcoma begins in cartilaginous tissue. Cartilage is a type of connective tissue that covers the ends of bones and lines the joints. Chondrosarcoma most often forms in the pelvis, upper leg, and shoulder and usually grows slowly, although sometimes it can grow quickly and spread to other parts of the body. Chondrosarcoma occurs mainly in older adults (over age 40). The risk increases with advancing age. A rare type of chondrosarcoma called extraskeletal chondrosarcoma does not form in bone cartilage. Instead, it forms in the soft tissues of the upper part of the arms and legs.

Ewing sarcoma

Ewing sarcoma usually arises in bone but may also rarely arise in soft tissue (muscle, fat, fibrous tissue, blood vessels, or other supporting tissue). Ewing sarcomas typically form in the pelvis, legs, or ribs, but can form in any bone. This tumor often grows quickly and spreads to other parts of the body, including the lungs. The risk of Ewing sarcoma is highest in children and adolescents younger than 19 years of age. Boys are more likely to develop Ewing sarcoma than girls. Ewing sarcoma is much more common in whites than in blacks or Asians.


Chordoma is a very rare tumor that forms in bones of the spine. These tumors usually occur in older adults and typically form at the base of the spine (sacrum) and at the base of the skull. About twice as many men as women are diagnosed with chordoma. When they do occur in younger people and children, they are usually found at the base of the skull and in the cervical spine (neck).

Feel free to share your research work on related topics in Journal of Orthopedic Oncology which offers information in all aspects of primary, malignant tumors. Osteosarcoma, Ewing's sarcoma, chondrosarcoma, chordoma, and soft tissue sarcomas etc., it also deals with diagnostic methods, therapeutic approaches, clinical, laboratory research and reconstructive techniques.

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Journal Considers Research article, Review articles, editorial, letter, case reports, short communications, original articles from leading scientists and scholars around the world in all areas of related to Malignantosteoid, Multilobular tumour of bone, Chondrosarcoma, Chordoma, Osteosarcoma, Ewing's sarcomaetc., which come under the scope of the journal.

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Journal of Orthopedic Oncology