Try this and see what the results are in May:
http://www.tbyil.com/anticancer.htm
My own undle, a bit older than you at age 85, was also told not to worry about his lung cancer, but the targeted radiation failed to stop it and it began to spread. He switched to the natural protocol in the above article and is now cancer free and playing a daily round of golf.
I do not believe that anyone is genetically destined to have cancer; however, genetic and similar lifestyles can make a person more susceptible to having cancer. When you have a family history, a protocol similar to th one may help you beat cancer and keep it at bay forever.
Best of luck!