Basic Clinical Radiobiology 2017

Spontaneous cancer incidence risk

Cancer risk within the next 5 years (%) Males Females

Age at treatment (years)

50 55 60 65 70 75

1.5 2.5 5.0 7.0

2.0 2.7 3.6 4.6 5.4 6.3

10.0 12.5

Follow-up period 5 years, in patients treated with radiotherapy at different ages. Data from UK, England and Wales 1983–1987