Illustration of bones affected by various types of sarcoma or bone cancer: -chondrosarcoma in green (shoulder blade, humerus, ribs, the spine, pelvis, femur, tibia) -osteosarcoma in red (upper extremity of the humerus, the lower extremity of the femur , upper extremity of the tibia) -Ewings sarcoma in purple (ribs, humeral shaft, pelvis, femoral shaft, tibial shaft). (Photo by: BSIP/UIG via Getty Images)