A tumor (English: “Osteosarcoma”, “skeletal sarcoma”) is a malignant tumor originating from bone cells or blood vessels located in it. Most bone cancer affects children and adolescents (stage 4 of the age cycle). Ewing tumors can also occur in adults.
Ewing's tumor often occurs in adolescents aged 7-12 years. Osteosarcoma grows from spongy bone. Most often the vertebrae, pelvic and femoral bones are affected. Tumors of this type are rare, so statistical data are incomplete. Ewing tumors include a group of different neoplasms