Bone cancer refers to a tumor on a bone that destroys the bone tissue. There are two main categories of bone cancer:\n\nPrimary bone cancer, when a tumor originates in the bone tissue, is a rare disease that comprises less than 1 percent of cancer diagnoses, according to the National Cancer Institute. \nMetastatic bone cancer is when cancer from another place in your body spreads to the bone.\n\nLearn more about cancer care and the experts at UPMC Hillman Cancer Center. \nTypes of Bone Cancer\nThe three most common types of primary bone cancer are:\n\nOsteosarcoma: This cancer develops out of the bone itself, and mainly affects children and teens. Most often seen in the arms and legs, it also can occur in the pelvis.\nEwing\u2019s sarcoma: This type of bone cancer typically is found in school-age children or teens. Tumors may develop along the backbone, pelvis, arms, or legs. Ewing\u2019s sarcoma rarely appears in the soft tissue.\nChondrosarcoma: This type begins in cartilage tissue and mainly affects older patients. It can occur anywhere in the skeleton, but is most often found in the pelvis or extremities.\n\nCauses of Bone Cancer\nAlthough the causes of bone cancer aren\u2019t well known, genetics and radiation exposure may play a role. A history of cancer, Paget\u2019s disease, or certain genetic syndromes also may raise your risk of developing bone cancer.\nBone Cancer Symptoms\nExact symptoms vary among bone cancer types. The location and size of the tumor affect the symptoms you may experience, but the following warning signs are most common:\n\nDull ache in the affected bone\nPain when at rest or at night\nSwelling or a lump\nSevere, deep bone pain\nBone fractures\n\nThese symptoms can mimic other diseases or infections, so it\u2019s important to be examined by a trained medical professional. A doctor will perform a physical exam and may order diagnostic tests, such as x-rays, MRI, or biopsy to confirm the diagnosis.\nRELATED: When to Worry About Your Body\u2019s Lumps and Bumps\nTreatment Options for Bone Cancer\nYour doctor will develop an individualized treatment plan that\u2019s based on the identity of your tumor. Radiation and chemotherapy may be needed to kill cancer cells. Surgery to remove the cancerous soft tissue or bone tumor, as well as nearby tissue (in some cases) may be part of your treatment plan.\nTreatment for anyone with bone cancer is highly tailored, particularly for cancers in sensitive locations such as the spine. Your doctor will make every effort to avoid amputation; more than \u00a090 percent of patients with extremity bone tumors do not require amputation.