Chondrosarcoma | Johns Hopkins Medicine

Chondrosarcoma primarily affects the cartilage cells of the femur (thighbone), arm, pelvis, or knee. Although less often, other areas (such as the ribs) may be affected. Chondrosarcoma is the second most common type of primary bone cancer. A primary bone cancer is one that starts from bone. This is opposed to starting in another organ and then …

https://www.hopkinsmedicine.org/health/conditions-and-diseases/sarcoma/chondrosarcoma