The American Brain Tumor Association Primer offers the following information on Chondrosarcoma.
“CHONDROSARCOMA
This very rare tumor arises from bone and is composed of cartilage. It is the malignant variant of the benign chondroma (described above) and tends to spread locally, staying within the same general area. This tumor is generally slow growing and rarely metastasizes, or spreads, to areas farther away. This tumor is most commonly found in the sphenoid bone – the boney ridge running along the back of the eyes – or near the clivus, a boney area at the base of the skull. The chondrosarcoma is more common in adult males.
Standard treatment is surgical removal which might be followed with radiation therapy. Those with a chondrosarcoma may also be eligible for treatment in a clinical trial – an organized research study. Those studies can be found through the Cancer Information Service at 800-422-6237.”