One in a...
Radiation damages dna
, and most of the time its repaired accurately.
Most cancers require multiple genetic defects that multipy and compund when cells divide. The probability is very small, in the rang of 1 in 10, 000 to 1in a million...And then time. Younger people live long enough to allow rare events to emerge. It is very low risk, but needs to be weighed carefully.