Page last reviewed: 13/07/2011
Ewing's sarcoma is a rare type of tumour that affects the bones. It is named after the doctor who discovered it, James Ewing.
It is mostly commonly a tumour of people aged 10 to 20 years
Ewing's sarcoma does not usually cause symptoms in its early stages. It is often diagnosed when you have an X-ray because of another injury.
As with most types of cancer, the outlook for individual cases depends largely on how far the cancer has advanced at the time of diagnosis.
What is cancer?
The body is made up of millions of different types of cells. Cancer happens when some of the cells multiply in an abnormal way. When cancer affects organs and solid tissues, it causes a growth called a tumour to form. Cancer can occur in any part of the body where the cells multiply abnormally.