analysis of causes of death after five years showed a relative risk of 2.11 ( 1.25 to 3.59 ) for new malignancies and of 1.65 ( 1.05 to 2.58 ) for cardiac disease , the increase in cardiac mortality being most pronounced in patients who had had tumours of the left breast and whose treatment had included orthovoltage radiation ( relative risk 2.67 ( 1.28 to 5.55 ) ) .
C0018799
cardiac disease
C0018787
cardiac