Quick Quiz: Primary Bone Cancers

Page 1 of 7: Primary Bone Cancers


Primary bone cancers, also known as sarcomas, are very rare malignancies, accounting for less than 0.2% of all cancers in the United States.1 According to the American Cancer Society, approximately 3610 new cases of primary bone cancer will be diagnosed in the United States in 2021, and approximately 2060 individuals will die from the disease.1 Overall, the most common types of primary bone cancer are osteosarcoma, chondrosarcoma, and Ewing sarcoma.1 Survival rates for patients depend on several factors, including the type and stage of disease at the time of diagnosis.1 How much do you know about primary bone cancer?

Sarcomas, which originate in bone, muscle, fibrous blood tissue, blood vessels, and certain tissues, are different than malignancies that start in another area of the body, such as the lung, breast, or prostate, and have spread to the bone (ie, metastatic cancer).1,2 There are several different kinds of primary bone cancer, and they are named based on the type of cells that form the tumor, as well as the part of the bone (or nearby tissue) that is affected.1 In adults, more than 40% of primary bone cancers are chondrosarcomas, 28% are osteosarcomas, 10% are chordomas, 8% are Ewing sarcomas, and 4% are fibrosarcomas. In children and teenagers aged <20 years, 56% of primary bone cancers are osteosarcomas, 34% are Ewing sarcomas, and 6% are chondrosarcomas.1,2 The 5-year relative survival rate for all stages of chondrosarcoma is 78%; 82% for chordoma; 60% for osteosarcoma; and 62% for Ewing sarcoma.1 Public awareness of primary bone cancers need to remain a priority to increase survival rates and improve patient quality of life.