Several types of bone cancer exist, including Ewing sarcoma, osteaosarcoma and chondrosarcoma. Bone cancer can develop in any bone, but some locations are more common. For example, bone cancer in the legs can develop in the knee with osteosarcoma and the upper leg and pelvis with chondrosarcoma. Primary bone cancer, in which the cancer begins in the bone, is rare and accounts for less than one per cent of all cancer cases, according to the National Cancer Institute.
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When bone cancer develops, pain is often felt in the affected bones. If you have bone cancer in a leg bone, you will likely feel pain in and around that bone. You may also notice that the area appears swollen and is tender to the touch. Bone pain is the most common sign of a bone cancer, but not all bone cancers cause pain, according to the National Cancer Institute.
Tumours in the bones destroy the healthy tissue and can make the affected bones much weaker than normal. If you have bone cancer in your legs, you may be more prone to fractures doing activities that wouldn't normally produce a fracture, since healthy bone tissue is damaged.
Weight loss is another common sign of bone cancer. However, weight loss is a sign of many forms of cancer and is also a sign of many other, less severe medical conditions. If you experience unexplained weight loss, visit your doctor to determine a cause.
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