Causes

• An error in a bone cell's DNA is the beginning of bone cancer. The cell grows and divides in an uncontrolled manner.
  
  

Symptoms

• Bone pain and tenderness in the affected area can be symptoms of bone cancer. Unexplained weight loss and fatigue may also be warning signs.
  
  

Types

• Osteosarcoma begins in the bone cells, while chondrosarcoma begins in cartilage and is often found on the end of bones, according to MayoClinic.com. Ewing's sarcoma may begin in a bone's nerve tissue, according to MayoClinic.
  
  

Risk Factors

• Genetic predisposition and exposure to large doses of radiation can increase the likelihood of bone cancer. Paget's disease is a precancerous condition that can lead to bone cancer.
  
  

Treatment

• Radiation therapy may be used to shrink bone cancer so it can be removed. Surgery can remove some cancers and, if necessary, cancerous limbs.