I am 55 years old and due to have a second laser treatment for Dysplacia of the Larynx , I am worried that this may return again, what are the chances of that happening? I m not a smoker and haven t had a cigarette for 15 years, I drink only Wine responsibly. My father and his father died of cancer of the throat , my father at 53 and my grandfather at 59, could this be hereditary?