A chondrosarcoma is a type of cancer of the bone. Chondrosarcoma is a cartilage-based tumor and is in a category of cancers called sarcomas. About 25% of primary bone cancers (meaning those which start in the bone) are chondrosarcomas. This disease can affect people or animals of any age, although it is more common among older people than among children.[
Diagnosis
X-rays and other imaging techniques such as a computed tomography ( CT) or magnetic resonance imaging ( MRI) are used to identify the tumor. To diagnose chondrosarcoma, the doctor removes a small sample of the suspected tumor in a procedure known as a biopsy. A pathologist looks at the sample under a microscope to determine whether the tissue contains malignant cells. A chest CT and a bone scan help the physician evaluate the lungs and other areas where the cancer may have spread (metastasized).