Bone cancers are a group of diseases where cancer cells form in the bones. The most common types include osteosarcoma, chondrosarcoma, and Ewing sarcoma. These cancers can occur in any bone but are often found in the arms, legs, and pelvis. Symptoms may include pain, swelling, and fractures, which can make daily activities difficult. Diagnosis typically involves imaging tests like X-rays or MRIs, followed by a biopsy to confirm the presence of cancer cells. Treatment options may include surgery, chemotherapy, and radiation therapy, depending on the type and stage of the cancer. Early detection is crucial for better outcomes.