To get back accessibility, please Be certain that cookies and JavaScript are enabled ahead of reloading the page.????? ? ?? ???? ??? ??? ???? ????? ??? ????? ???? ?????? ???? ?? ?? ????? ???? ? ?? ??? ?????????. ?????.Somewhere around 87 % of Ewing sarcomas are Ewing sarcoma of bone, that's a bone tumor that sometimes happens inside the thigh bones