as compared with 209 matched controls who had survived cancer in childhood but who did not have bone cancer later , patients who had had radiation therapy had a 2.7-fold risk ( 95 percent confidence interval , 1.0 to 7.7 ) and a sharp dose-response gradient reaching a 40-fold risk after doses to the bone of more than 6000 rad .
C0279530
bone cancer
C0262950
bone