Bone cancer can manifest in various forms, including osteosarcoma, Ewing sarcoma, and chondrosarcoma. Common signs include persistent bone pain, swelling, and fractures. Diagnosis often involves imaging tests like X-rays and MRIs, followed by a biopsy. Treatment typically includes surgery to remove the tumor, chemotherapy, radiation therapy, or a combination of these methods. In some cases, amputation may be necessary. Early detection and prompt treatment are crucial for better outcomes.